Transcript Physical Science Assessment Items

Biology Assessment Items
Biology Content
How are prokaryotes different from
eukaryotes?
a. Prokaryotes can make their own
food but eukaryotes cannot.
b. Eukaryotes have a cell wall, but
prokaryotes do not.
c. Eukaryotes have a nucleus but
prokaryotes do not.
d. Prokaryotes always have
organelles and eukaryotes only
sometimes do.
How are prokaryotes different from
eukaryotes?
a. Prokaryotes can make their own
food but eukaryotes cannot.
b. Eukaryotes have a cell wall, but
prokaryotes do not.
c. Eukaryotes have a nucleus but
prokaryotes do not.
d. Prokaryotes always have
organelles and eukaryotes only
sometimes do.
What is the main difference
between prokaryotes and
eukaryotes?
a. Prokaryotes have DNA.
b. Prokaryotes have a
nucleus.
c. Eukaryotes have a
nucleus.
d. There is no difference.
What is the main difference
between prokaryotes and
eukaryotes?
a. Prokaryotes have DNA.
b. Prokaryotes have a
nucleus.
c. Eukaryotes have a
nucleus.
d. There is no difference.
A cell has a defect that results in the loss of
its ability to regulate the passage of water,
food, and wastes into and out of the cell. In
which of the following cell structures is this
defect most likely to be located?
a.
ribosomes
b.
chloroplasts
c.
cell membrane
d.
endoplasmic reticulum
A cell has a defect that results in the loss of
its ability to regulate the passage of water,
food, and wastes into and out of the cell. In
which of the following cell structures is this
defect most likely to be located?
a.
ribosomes
b.
chloroplasts
c.
cell membrane
d.
endoplasmic reticulum
Which of the following statements
about cell membranes is NOT true?
a. They are barriers between the
inside and outside of the cell.
b. They contain proteins which
perform a variety of transport functions.
c. They are composed of
phospholipids.
d. The allow DNA to move in and out
of the cell.
Which of the following statements
about cell membranes is NOT true?
a. They are barriers between the
inside and outside of the cell.
b. They contain proteins which
perform a variety of transport functions.
c. They are composed of
phospholipids.
d. The allow DNA to move in and out
of the cell.
Mitochondria are used to produce
energy for cells. Which type of cell
would contain the most
mitochondria?
a. fat cells
b. bone cells
c. red blood cells
d. muscle cells
Mitochondria are used to produce
energy for cells. Which type of cell
would contain the most
mitochondria?
a. fat cells
b. bone cells
c. red blood cells
d. muscle cells
The process of diffusion occurs when –
a. all molecular movement stops.
b. molecules move from areas of
lesser concentration to areas of greater
concentration.
c.
sugar molecules move into a cell.
d. molecules move from areas of
greater concentration to areas of lesser
concentration.
The process of diffusion occurs when –
a. all molecular movement stops.
b. molecules move from areas of
lesser concentration to areas of greater
concentration.
c.
sugar molecules move into a cell.
d. molecules move from areas of
greater concentration to areas of lesser
concentration.
Which of the following is responsible for
maintaining the shape of the cell as
well as controlling what enters and
leaves the cell?
a. Nucleus
b. Cell wall
c.
Cell membrane
d. Golgi apparatus
Which of the following is responsible for
maintaining the shape of the cell as
well as controlling what enters and
leaves the cell?
a. Nucleus
b. Cell wall
c. Cell membrane
d. Golgi apparatus
Which organelle below reduces the
effects of osmosis in this type of
protozoan?
a. Contractile vacuole
b. Food vacuole
c.
Cilia
d. Oral groove
Which organelle below reduces the
effects of osmosis in this type of
protozoan?
a. Contractile vacuole
b. Food vacuole
c.
Cilia
d. Oral groove
The diffusion of a substance into
or out of a cell requires—
a. a concentration gradient.
b. an active transport system.
c. a carrier molecule.
d. a functioning mitochondrion.
The diffusion of a substance into
or out of a cell requires—
a. a concentration gradient.
b. an active transport system.
c. a carrier molecule.
d. a functioning mitochondrion.
Some single-celled organisms have
cilia or flagella which allow them to
___________.
a. reproduce
b. grow
c. move
d. respire
Some single-celled organisms have
cilia or flagella which allow them to
___________.
a. reproduce
b. grow
c. move
d. respire
The plasma membrane of a cell is
selectively permeable, which means
it—
a. controls all cellular activities.
b. is responsible for asexual
reproduction.
c. allows some materials to pass.
d. has a carbohydrate foundation.
The plasma membrane of a cell is
selectively permeable, which means
it—
a. controls all cellular activities.
b. is responsible for asexual
reproduction.
c. allows some materials to pass.
d. has a carbohydrate foundation.
The primary structure of a cell
membrane is composed of—
a. cholesterol.
b. phospholipids.
c. carbohydrates.
d. saccharides.
The primary structure of a cell
membrane is composed of—
a. cholesterol.
b. phospholipids.
c. carbohydrates.
d. saccharides.
Golgi apparatus is to vacuole as
packaging is to—
a. protecting.
b. storing
c. asorbing.
d. hydrating.
Golgi apparatus is to vacuole as
packaging is to—
a. protecting.
b. storing
c. absorbing.
d. hydrating.
Peptide bonds between amino
acids are formed primarily on the
cell’s—
a. mitochondria.
b. lysosomes.
c. ribosomes.
d. membrane.
Peptide bonds between amino
acids are formed primarily on the
cell’s—
a. mitochondria.
b. lysosomes.
c. ribosomes.
d. membrane.
Which activity is illustrated in the
diagram of an ameba shown
below?
a.
b.
c.
d.
egestion
synthesis
respiration
ingestion
Which activity is illustrated in the
diagram of an ameba shown
below?
a.
b.
c.
d.
egestion
synthesis
respiration
ingestion
The cell theory states all of the
following except:
a. All living things are made of
cells.
b. Viruses are made of cells.
c. Cells are the basic units of life.
d. Cells come only from other
cells.
The cell theory states all of the
following except:
a. All living things are made of
cells.
b. Viruses are made of cells.
c. Cells are the basic units of life.
d. Cells come only from other
cells.
Which of the following statements is
true of all living things?
a. All cells come from other cells.
b. All cells contain a nucleus.
c. Cells reproduce by binary
fission.
d. All living things are multicellular.
Which of the following statements is
true of all living things?
a. All cells come from other cells.
b. All cells contain a nucleus.
c. Cells reproduce by binary
fission.
d. All living things are multicellular.
Which statement is not part of the
cell theory?
a. Cells are the basic unit of
structure of living things.
b. Cells are the basic unit of
function of living things.
c. Cell parts such as chloroplasts
are self-replicating.
d. Cells come from preexisting
cells.
Which statement is not part of the
cell theory?
a. Cells are the basic unit of
structure of living things.
b. Cells are the basic unit of
function of living things.
c. Cell parts such as chloroplasts
are self-replicating.
d. Cells come from preexisting
cells.
The invention of the compound light
microscope enabled scientists to
observe cells, helping them to –
a. determine the number of atoms in a
molecule.
b. discover a basic similarity among
organisms.
c. study the behavior of chordates.
d. develop techniques for growing
plants in a laboratory.
The invention of the compound light
microscope enabled scientists to
observe cells, helping them to –
a. determine the number of atoms in a
molecule.
b. discover a basic similarity among
organisms.
c. study the behavior of chordates.
d. develop techniques for growing
plants in a laboratory.
The biochemical analysis of different
chlorophyll pigments in plants would be
most useful in determining—
a. how plants reproduce asexually
b. how plants pass favorable traits to
their offspring
c. why some plants produce
hemoglobin
d. which plants might have a common
ancestor
The biochemical analysis of different
chlorophyll pigments in plants would be
most useful in determining—
a. how plants reproduce asexually
b. how plants pass favorable traits to
their offspring
c. why some plants produce
hemoglobin
d. which plants might have a common
ancestor
Enzymes can promote chemical reactions in
living tissues. For example, the breakdown of
hydrogen peroxide into harmless water and
oxygen is accomplished by the chemical
catalase.
Which molecule represents the substrate in this
reaction?
a.
catalase
b.
hydrogen peroxide
c.
oxygen
d.
water
Enzymes can promote chemical reactions in
living tissues. For example, the breakdown of
hydrogen peroxide into harmless water and
oxygen is accomplished by the chemical
catalase.
Which molecule represents the substrate in this
reaction?
a.
catalase
b.
hydrogen peroxide
c.
oxygen
d.
water
Catalysts, such as enzymes, speed up the
rate of a reaction by—
a. raising the temperature at which the
reaction occurs.
b. lowering the temperature at which the
reaction occurs.
c. increasing the activation energy
required for the reaction to occur.
d. lowering the activation energy required
for the reaction to occur.
Catalysts, such as enzymes, speed up the
rate of a reaction by—
a. raising the temperature at which the
reaction occurs.
b. lowering the temperature at which the
reaction occurs.
c. increasing the activation energy
required for the reaction to occur.
d. lowering the activation energy required
for the reaction to occur.
The role of enzymes in chemical reactions
within the cell is BEST described how?
a. Enzymes change the outcome of the
chemical reaction.
b. Enzymes change the rate of the chemical
reaction, but do not alter the outcome.
C .Enzymes have no effect on any part of
the chemical reaction.
d. Enzymes add energy to the chemical
reaction.
The role of enzymes in chemical reactions
within the cell is BEST described how?
a. Enzymes change the outcome of the
chemical reaction.
b. Enzymes change the rate of the chemical
reaction, but do not alter the outcome.
C .Enzymes have no effect on any part of
the chemical reaction.
d. Enzymes add energy to the chemical
reaction.
Which substance is made up of
many monomers joined together in
long chains?
a. amino acid
b. protein
c. nucleotide
d. fatty acid
Which substance is made up of
many monomers joined together in
long chains?
a. amino acid
b. protein
c. nucleotide
d. fatty acid
Many aquatic birds secrete waxy
organic substances that repel water.
The birds use these substances to coat
their feathers. An analysis of these
substances would reveal that they are
composed mostly of –
a. lipids.
b. proteins.
c.
carbohydrates.
d. nucleic acids.
Many aquatic birds secrete waxy
organic substances that repel water.
The birds use these substances to coat
their feathers. An analysis of these
substances would reveal that they are
composed mostly of –
a. lipids.
b. proteins.
c.
carbohydrates.
d. nucleic acids.
Which macromolecule is correctly
paired with its function?
a. Lipids and genetic information
b. Nucleic acids and energy
storage
c. Carbohydrates and enzymatic
function
d. Proteins and enzymatic function
Which macromolecule is correctly
paired with its function?
a. Lipids and genetic information
b. Nucleic acids and energy
storage
c. Carbohydrates and enzymatic
function
d. Proteins and enzymatic function
One way RNA is different from
DNA is that RNA contains –
a. phosphate groups.
b. hydrogen bonds.
c. ribose.
d. bases.
One way RNA is different from
DNA is that RNA contains –
a. phosphate groups.
b. hydrogen bonds.
c. ribose.
d. bases.
CCGTAC
What would the mRNA complement
of the above DNA strand be?
a. AATGCA
b. GGCAUG
c. TTACUT
d. UUACGU
CCGTAC
What would the mRNA complement
of the above DNA strand be?
a. AATGCA
b. GGCAUG
c. TTACUT
d. UUACGU
The cells that make up the skin of an
individual have some functions different
from the cells that make up the liver
because –
a.
all cells have a common ancestor.
b. different cells have different genetic
material.
c. environment and past history have no
influence on cell function.
d. different parts of genetic instructions
are used in different types of cells.
The cells that make up the skin of an
individual have some functions different
from the cells that make up the liver
because –
a.
all cells have a common ancestor.
b. different cells have different genetic
material.
c. environment and past history have no
influence on cell function.
d. different parts of genetic instructions
are used in different types of cells.
Uncontrolled cell division is a
characteristic of –
a. cleavage.
b. oogenesis.
c. cancer.
d. regeneration.
Uncontrolled cell division is a
characteristic of –
a. cleavage.
b. oogenesis.
c. cancer.
d. regeneration.
A karyotype would be LEAST useful
in determining whether a person
had —
a. a missing 23rd chromosome.
b. more than one X chromosome.
c. a recessive gene on the Y
chromosome.
d. an extra copy of chromosome 21.
A karyotype would be LEAST useful
in determining whether a person
had —
a. a missing 23rd chromosome.
b. more than one X chromosome.
c. a recessive gene on the Y
chromosome.
d. an extra copy of chromosome 21.
The eye is considered an organ
because it –
a. is made up of different tissues
working together.
b. requires light energy to function
correctly.
c. contains a fluid-filled central cavity.
d. is almost completely surrounded by
bone.
The eye is considered an organ
because it –
a. is made up of different tissues
working together.
b. requires light energy to function
correctly.
c. contains a fluid-filled central cavity.
d. is almost completely surrounded by
bone.
After a series of cell divisions, an embryo
develops different types of body cells such as
muscle cells, nerve cells, and blood cells. This
development occurs because –
a. the genetic code changes as the cells divide.
b. different segments of the genetic instructions
are used to produce different types of cells.
c. different genetic instructions are synthesized to
meet the needs of new types of cells.
d. some parts of the genetic materials are lost as
a result of fertilization.
After a series of cell divisions, an embryo
develops different types of body cells such as
muscle cells, nerve cells, and blood cells. This
development occurs because –
a. the genetic code changes as the cells divide.
b. different segments of the genetic instructions
are used to produce different types of cells.
c. different genetic instructions are synthesized to
meet the needs of new types of cells.
d. some parts of the genetic materials are lost as
a result of fertilization.
When excess sugar is produced in
a plant, the plant will –
a. release the sugar into the soil.
b. convert the sugar into minerals.
c. store the sugar by forming larger
molecules.
d. burn the leaves of the plant as it
releases energy.
When excess sugar is produced in
a plant, the plant will –
a. release the sugar into the soil.
b. convert the sugar into minerals.
c. store the sugar by forming larger
molecules.
d. burn the leaves of the plant as it
releases energy.
Vascular plants transport
water and nutrients to all
parts of the plant through –
a. diffusion
b. phagocytosis
c. xylem and phloem
d. cellular respiration and
photosynthesis
Vascular plants transport
water and nutrients to all
parts of the plant through –
a. diffusion
b. phagocytosis
c. xylem and phloem
d. cellular respiration and
photosynthesis
Which disease damages the human
immune system, leaving the body
open to certain infectious agents?
a. flu
b. AIDS
c. chicken pox
d. pneumonia
Which disease damages the human
immune system, leaving the body
open to certain infectious agents?
a. flu
b. AIDS
c. chicken pox
d. pneumonia
Which statement best describes the
relationship between the terms
chromosomes, genes, and nuclei?
a. Chromosomes are found on genes.
Genes are found in nuclei.
b. Chromosomes are found in nuclei. Nuclei
are found in genes.
c. Genes are found on chromosomes.
Chromosomes are found in nuclei.
d. Genes are found in nuclei. Nuclei are
found in chromosomes.
Which statement best describes the
relationship between the terms
chromosomes, genes, and nuclei?
a. Chromosomes are found on genes.
Genes are found in nuclei.
b. Chromosomes are found in nuclei. Nuclei
are found in genes.
c. Genes are found on chromosomes.
Chromosomes are found in nuclei.
d. Genes are found in nuclei. Nuclei are
found in chromosomes.
Which of the following statements
BEST explains the relationship
between the parts of genetic materials?
a. Each DNA molecule contains genes.
b.Each gene contains many DNA
molecules.
c.Each DNA molecule contains many
chromosomes.
d.Each chromosome contains DNA
molecules.
Which of the following statements
BEST explains the relationship
between the parts of genetic materials?
a. Each DNA molecule contains genes.
b.Each gene contains many DNA
molecules.
c.Each DNA molecule contains many
chromosomes.
d.Each chromosome contains DNA
molecules.
Which explanation below BEST
explains why a person may not be able
to lift a wheelbarrow by its handles?
a. The effort force is too close to the
fulcrum.
b. The resistance force is to close to
the fulcrum.
c. The fulcrum is too large.
d. The effort force is greater than the
resistance force.
Which explanation below BEST
explains why a person may not be able
to lift a wheelbarrow by its handles?
a. The effort force is too close to the
fulcrum.
b. The resistance force is to close to
the fulcrum.
c. The fulcrum is too large.
d. The effort force is greater than the
resistance force.
In what part of DNA is genetic
information located?
a.. hydrogen bonds
b. nucleotide sequence
c. sugar molecules
d. enzymes
In what part of DNA is genetic
information located?
a.. hydrogen bonds
b. nucleotide sequence
c. sugar molecules
d. enzymes
When DNA separate into two
strands, the DNA would most
likely be directly involved in
a. replication
b. fertilization
c. differentiation
d. evolution
When DNA separate into two
strands, the DNA would most
likely be directly involved in
a. replication
b. fertilization
c. differentiation
d. evolution
The weakest bonds in a doublestranded molecule of
deoxyribonucleic acid exists
between the—
a. deoxyribose sugars
b. phosphate groups
c. nitrogenous bases
d. 5-carbon sugars
The weakest bonds in a doublestranded molecule of
deoxyribonucleic acid exists
between the—
a. deoxyribose sugars
b. phosphate groups
c. nitrogenous bases
d. 5-carbon sugars
Watson and Crick’s model of
DNA resembles –
a. interlocking gears
b. a boat on a calm lake
c. a twisted ladder
d. electric wires
Watson and Crick’s model of
DNA resembles –
a. interlocking gears
b. a boat on a calm lake
c. a twisted ladder
d. electric wires
In what part of DNA is genetic
information located?
a. Hydrogen bonds
b. Nucleotide sequence
c. Sugar molecules
d. Enzymes
In what part of DNA is genetic
information located?
a. Hydrogen bonds
b. Nucleotide sequence
c. Sugar molecules
d. Enzymes
DNA that has been cut by enzymes
can separate into segments of
different lengths during the process
of –
a. mitosis.
b. electrophoresis.
c. gene amplification.
d. cytokinesis.
DNA that has been cut by enzymes
can separate into segments of
different lengths during the process
of –
a. mitosis.
b. electrophoresis.
c. gene amplification.
d. cytokinesis.
Unlike mitosis, meiosis occurs
only in—
a. reproductive cells.
b. muscle cells.
c. connectice tissue cells.
d. nerve cells.
Unlike mitosis, meiosis occurs
only in—
a. reproductive cells.
b. muscle cells.
c. connectice tissue cells.
d. nerve cells.
The leaf cells of the white oak (Quercus
alba) contain 24 chromosomes. After
meosis is complete how many
chromosomes are in the new cells?
a. 12
b. 20
c.
24
d. 48
The leaf cells of the white oak (Quercus
alba) contain 24 chromosomes. After
meosis is complete how many
chromosomes are in the new cells?
a. 12
b. 20
c.
24
d. 48
Sexual reproduction in plants
depends on sex cells being
produces by the process of—
a.osmosis.
b.fermentation.
c.transpiration.
d.meiosis.
Sexual reproduction in plants
depends on sex cells being
produces by the process of—
a.osmosis.
b.fermentation.
c.transpiration.
d.meiosis.
The diagram below shows a sea
star in various stages of
regeneration.
What cellular process is directly
responsible for this regeneration?
a. meiosis
b. mitosis
c. transpiration
d. respiration
The diagram below shows a sea
star in various stages of
regeneration.
What cellular process is directly
responsible for this regeneration?
a. meiosis
b. mitosis
c. transpiration
d. respiration
If an intestinal cell in a butterfly
contains 24 chromosomes, a
butterfly egg cell would contain—
a. 3 chromosomes
b. 6 chromosomes
c. 12 chromosomes
d. 24 chromosomes
If an intestinal cell in a butterfly
contains 24 chromosomes, a
butterfly egg cell would contain—
a. 3 chromosomes
b. 6 chromosomes
c. 12 chromosomes
d. 24 chromosomes
In fruit flies, the gene for red eye color
(R) is dominant to the gene for white
eye color (r). The trait is sex-liked.
What would be the genotype of a whiteeyed female?
a. XRXr
b. XrXr
c.
XRY
d. XrY
In fruit flies, the gene for red eye color
(R) is dominant to the gene for white
eye color (r). The trait is sex-liked.
What would be the genotype of a whiteeyed female?
a. XRXr
b. XrXr
c.
XRY
d. XrY
Meiosis results in greater genetic variation
than asexual reproduction because
meiosis—
a. is a lengthy process that produces many
errors.
b. results in a greater number of offspring.
c. is more common in higher order species.
d. allows the recombination of genetic
information.
Meiosis results in greater genetic variation
than asexual reproduction because
meiosis—
a. is a lengthy process that produces many
errors.
b. results in a greater number of offspring.
c. is more common in higher order species.
d. allows the recombination of genetic
information.
If a breeder wanted to figure out whether a
black rabbit was homozygous (BB) or
heterozygous (Bb) for coat color, which of
the following rabbit genotypes would be
crossed with the black rabbit?
a.
BB
b.
Bb
c.
Bb
d.
BbBb
If a breeder wanted to figure out whether a
black rabbit was homozygous (BB) or
heterozygous (Bb) for coat color, which of
the following rabbit genotypes would be
crossed with the black rabbit?
a.
BB
b.
Bb
c.
Bb
d.
BbBb
Which of the following is an example of
codominance in genetic traits?
a. A tall pea plant and a short pea plant
produce tall pea plants.
b. An orange cat and a black cat produce
an orange-and-black kitten.
c. A blue-eyed man and a brown-eyed
woman produce a blue-eyed child.
d. A color-blind woman and a man with
normal vision produce a color-blind son.
Which of the following is an example of
codominance in genetic traits?
a. A tall pea plant and a short pea plant
produce tall pea plants.
b. An orange cat and a black cat produce
an orange-and-black kitten.
c. A blue-eyed man and a brown-eyed
woman produce a blue-eyed child.
d. A color-blind woman and a man with
normal vision produce a color-blind son.
The number of chromosomes
can be studied by looking at a-a. karyotype.
b. pedigree chart.
c. genotype.
d. punnett square.
The number of chromosomes
can be studied by looking at a-a. karyotype.
b. pedigree chart.
c. genotype.
d. punnett square.
Humans may have type O, A, B, or
AB blood. This blood type is a trait
determined by—
a. a double crossover on the X
chromosome.
b. multiple alleles.
c. genes on the Y chromosome.
d. three homologous chromosomes.
Humans may have type O, A, B, or
AB blood. This blood type is a trait
determined by—
a. a double crossover on the X
chromosome.
b. multiple alleles.
c. genes on the Y chromosome.
d. three homologous chromosomes.
Two plants probably belong to the
same species if they—
a. have leaves that look alike.
b. can produce fertile offspring.
c. have the same number of
cotyledons.
d. develop the same type of
chlorophyll.
Two plants probably belong to the
same species if they—
a. have leaves that look alike.
b. can produce fertile offspring.
c. have the same number of
cotyledons.
d. develop the same type of
chlorophyll.
In which group would there be
the greatest similarity between
members in terms of structure
and function?
a. species
b. genus
c. kingdom
d. phylum
In which group would there be
the greatest similarity between
members in terms of structure
and function?
a. species
b. genus
c. kingdom
d. phylum
An organism is multicellular and
autotrophic. How would it be
classified?
a. Animalia
b. Fungi
c. Plantae
d. Eubacteria
An organism is multicellular and
autotrophic. How would it be
classified?
a. Animalia
b. Fungi
c. Plantae
d. Eubacteria
Which of these biological
classification groups has the
fewest members?
a. class
b. genus
c. species
d. family
Which of these biological
classification groups has the
fewest members?
a. class
b. genus
c. species
d. family
A red maple tree is known by the
scientific name Acer rubrum. The
sugar maple is known as Acer
saccharum. What is the smallest
classification division these trees have
in common?
a. Phylum
b. Order
c.
Genus
d. Species
A red maple tree is known by the
scientific name Acer rubrum. The
sugar maple is known as Acer
saccharum. What is the smallest
classification division these trees have
in common?
a. Phylum
b. Order
c. Genus
d. Species
All of the animals in the phylum
Vertebrata must belong to the
same—
a. family.
b. genus.
c. kingdom.
d. order.
All of the animals in the phylum
Vertebrata must belong to the
same—
a. family.
b. genus.
c. kingdom.
d. order.
A mushroom, mildew and bread
mold are all classified in the
same –
a. class.
b. kingdom.
c. genus.
d. species.
A mushroom, mildew and bread
mold are all classified in the
same –
a. class.
b. kingdom.
c. genus.
d. species.
Which of the following cannot make
their own proteins and as a result
requires a host cell?
a. Archaebacteria
b. Viruses
c. Eubacteria
d. Protozoans
Which of the following cannot make
their own proteins and as a result
requires a host cell?
a. Archaebacteria
b. Viruses
c. Eubacteria
d. Protozoans
The illustration below shows part of the
carbon cycle.
At position Y, carbon is most likely to be
in which of the following forms?
a. protein
b. carbon solid
c.
carbohydrate
d. carbon dioxide
The illustration below shows part of the
carbon cycle.
At position Y, carbon is most likely to be
in which of the following forms?
a. protein
b. carbon solid
c.
carbohydrate
d. carbon dioxide
Legumes, such as clover and alfalfa, have
nodules on their roots that contain nitrogen-fixing
bacteria. These bacteria convert nitrogen gas
from the atmosphere into nitrates.
Which of the following best accounts for the
presence of nitrogen-fixing bacteria in legume
root nodules?
a. Nitrates are a food source for earthworms.
b. Plants can use nitrates, but not nitrogen gas.
c. Nitrates are one of the reactants in
photosynthesis.
d. Nitrogen gas is toxic to most plants, but
nitrates are nontoxic.
Legumes, such as clover and alfalfa, have
nodules on their roots that contain nitrogen-fixing
bacteria. These bacteria convert nitrogen gas
from the atmosphere into nitrates.
Which of the following best accounts for the
presence of nitrogen-fixing bacteria in legume
root nodules?
a. Nitrates are a food source for earthworms.
b. Plants can use nitrates, but not nitrogen gas.
c. Nitrates are one of the reactants in
photosynthesis.
d. Nitrogen gas is toxic to most plants, but
nitrates are nontoxic.
The nitrogen cycle is important to all
living things because nitrogen is
found in which molecules?
a. saturated fats
b. nucleic acids
c. starches
d. sugars
The nitrogen cycle is important to all
living things because nitrogen is
found in which molecules?
a. saturated fats
b. nucleic acids
c. starches
d. sugars
In an ecosystem, what happens to the
atoms of certain chemical elements such as
carbon, oxygen, and nitrogen?
a. They move into and out of living
systems.
b.
They are never found in living systems.
c. They move out of living systems and
never return.
d. They move into living systems and
remain there.
In an ecosystem, what happens to the
atoms of certain chemical elements such as
carbon, oxygen, and nitrogen?
a. They move into and out of living
systems.
b.
They are never found in living systems.
c. They move out of living systems and
never return.
d. They move into living systems and
remain there.
An ecosystem is represented below.
This ecosystem will be self-sustaining if—
a. the organisms labeled A outnumber the organisms
labeled B
b. the organisms labeled A are equal in number to the
organisms labeled B
c. the type of organisms represented by B are eliminated
d. materials cycle between the organisms labeled A and
the organisms labeled B
An ecosystem is represented below.
This ecosystem will be self-sustaining if—
a. the organisms labeled A outnumber the organisms
labeled B
b. the organisms labeled A are equal in number to the
organisms labeled B
c. the type of organisms represented by B are eliminated
d. materials cycle between the organisms labeled A and
the organisms labeled B
The FIRST evidence that nitrogenfixing bacteria populations have
become too low in a terrestrial biome
would be a decline in the—
a. producer populations.
b. first-order consumer populations.
c. second-order consumer
populations.
d. decomposer populations.
The FIRST evidence that nitrogenfixing bacteria populations have
become too low in a terrestrial biome
would be a decline in the—
a. producer populations.
b. first-order consumer populations.
c. second-order consumer
populations.
d. decomposer populations.
In an ecosystem, elements such as
nitrogen and carbon move between
living things and the environment. The
conversion of these elements are part
of—
a. biogeochemical cycles.
b. ecological succession.
c.
energy pyramids.
d. symbiotic relationships.
In an ecosystem, elements such as
nitrogen and carbon move between
living things and the environment. The
conversion of these elements are part
of—
a. biogeochemical cycles.
b. ecological succession.
c.
energy pyramids.
d. symbiotic relationships.
The process by which free nitrogen
is returned to the Earth’s
atmosphere is called—
a. decomposition.
b. condensation.
c. respiration.
d. denitrification.
The process by which free nitrogen
is returned to the Earth’s
atmosphere is called—
a. decomposition.
b. condensation.
c. respiration.
d. denitrification.
Usable nitrogen is released into
soil from animal wastes by the
breakdown of –
a. plant proteins
b. water
c. ammonia
d. sugar molecules
Usable nitrogen is released into
soil from animal wastes by the
breakdown of –
a. plant proteins
b. water
c. ammonia
d. sugar molecules
Oxygen is added to an
ecosystem by—
a. cellular respiration.
b. photosynthesis.
c. the nitrogen cycle.
d. dehydration.
Oxygen is added to an
ecosystem by—
a. cellular respiration.
b. photosynthesis.
c. the nitrogen cycle.
d. dehydration.
In a typical ecosystem, the biomass of
carnivores is—
a. usually greater than the biomass of
herbivores.
b. usually less than the biomass of
herbivores.
c. usually the same as the biomass of
herbivores.
d. could be greater than or less than the
biomass of herbivores depending on the
ecosystem.
In a typical ecosystem, the biomass of
carnivores is—
a. usually greater than the biomass of
herbivores.
b. usually less than the biomass of
herbivores.
c. usually the same as the biomass of
herbivores.
d. could be greater than or less than the
biomass of herbivores depending on the
ecosystem.
The little brown bat has populations in the millions
in some caves. These mammals consume
insects that are harmful to corn and cotton. It is
estimated that a community of a million bats
consumes 10 tons of insects each night. As the
population of bats increases, it would be
expected that crop production in the nearby area
would—
a.
show a minimal response.
b.
remain constant.
c.
be cut in half.
d.
steadily increase.
The little brown bat has populations in the millions
in some caves. These mammals consume
insects that are harmful to corn and cotton. It is
estimated that a community of a million bats
consumes 10 tons of insects each night. As the
population of bats increases, it would be
expected that crop production in the nearby area
would—
a.
show a minimal response.
b.
remain constant.
c.
be cut in half.
d.
steadily increase.
Because plants are able to undergo
photosynthesis, they do not—
a. require carbon dioxide.
b. store energy for later use.
c. undergo cellular respiration.
d. depend on other organisms for
energy.
Because plants are able to undergo
photosynthesis, they do not—
a. require carbon dioxide.
b. store energy for later use.
c. undergo cellular respiration.
d. depend on other organisms for
energy.
Energy stored in food is released
when –
a. chemical bonds are broken.
b. atomic nuclei are split.
c. elements combine.
d. electrons are produced.
Energy stored in food is released
when –
a. chemical bonds are broken.
b. atomic nuclei are split.
c. elements combine.
d. electrons are produced.
Which terms refers to the behavior
of two species attempting to use the
same living space, food source, and
water source?
a. saprophytic
b. competitive
c. predatory
d. symbiotic
Which terms refers to the behavior
of two species attempting to use the
same living space, food source, and
water source?
a. saprophytic
b. competitive
c. predatory
d. symbiotic
A certain species of bird eats insects off
the backs of cattle. If the relationship is
mutualistic, the individuals benefiting
from the relationship are—
a. only the birds.
b. only the cattle.
c.
neither the birds nor the cattle.
d. both the birds and the cattle.
A certain species of bird eats insects off
the backs of cattle. If the relationship is
mutualistic, the individuals benefiting
from the relationship are—
a. only the birds.
b. only the cattle.
c.
neither the birds nor the cattle.
d. both the birds and the cattle.
When brown tree snakes were first introduced to the
island of Guam, they had no natural predators. These
snakes sought out and ate many of the eggs of insecteating birds.
What probably occurred after the introduction of the
brown tree snakes?
a.
The bird population increased.
b.
The insect population increased.
c.
The bird population began to seek a new food
source.
d.
The insect population began to seek a new food
source.
When brown tree snakes were first introduced to the
island of Guam, they had no natural predators. These
snakes sought out and ate many of the eggs of insecteating birds.
What probably occurred after the introduction of the
brown tree snakes?
a.
The bird population increased.
b.
The insect population increased.
c.
The bird population began to seek a new food
source.
d.
The insect population began to seek a new food
source.
Members of the same species
found in an ecosystem are called
a–
a. family.
b. population.
c. niche.
d. community.
Members of the same species
found in an ecosystem are called
a–
a. family.
b. population.
c. niche.
d. community.
Highly social species of organisms benefit
from cooperative behavior in all of the
following ways EXCEPT by improving—
a. chances of surviving environmental
disasters.
b. opportunities for finding and obtaining
food.
c.
modifications to the environment.
d.
defensive tactics against predators.
Highly social species of organisms benefit
from cooperative behavior in all of the
following ways EXCEPT by improving—
a. chances of surviving environmental
disasters.
b. opportunities for finding and obtaining
food.
c.
modifications to the environment.
d.
defensive tactics against predators.
Members of the same species
found in a ecosystem are called
a—
a. family.
b. population.
c. niche.
d. community.
Members of the same species
found in a ecosystem are called
a—
a. family.
b. population.
c. niche.
d. community.
Dumping raw sewage into a river will
lead to a reduction in dissolved oxygen
in the water. This reduction will most
likely cause –
a. an increase in all fish populations.
b. a decrease in most aquatic animal
populations.
c.
an increase in depth of the water.
d. a decrease in water temperature.
Dumping raw sewage into a river will
lead to a reduction in dissolved oxygen
in the water. This reduction will most
likely cause –
a. an increase in all fish populations.
b. a decrease in most aquatic animal
populations.
c.
an increase in depth of the water.
d. a decrease in water temperature.
What is the major environmental
factor limiting the numbers of
autotrophs at great depths in the
ocean?
a. type of seafloor
b. amount of light
c. availability of minerals
d. absence of biotic factors
What is the major environmental
factor limiting the numbers of
autotrophs at great depths in the
ocean?
a. type of seafloor
b. amount of light
c. availability of minerals
d. absence of biotic factors
In a certain ecosystem, rattlesnakes are
predators of prairie dogs. If the prairie dog
population started to increase, how would the
ecosystem most likely regain stability?
a. The rattlesnake population would start to
decrease.
b. The rattlesnake population would start to
increase.
c. The prairie dog population would increase
rapidly.
d. The prairie dog population would begin to
prey on the rattlesnakes.
In a certain ecosystem, rattlesnakes are
predators of prairie dogs. If the prairie dog
population started to increase, how would the
ecosystem most likely regain stability?
a. The rattlesnake population would start to
decrease.
b. The rattlesnake population would start to
increase.
c. The prairie dog population would increase
rapidly.
d. The prairie dog population would begin to
prey on the rattlesnakes.
Which of these is a description of
mutualism?
a. Both species exploit a common vital
resource.
b. One species is more complex than the
other.
c. Both species benefit from one another.
d. Neither species interacts with the other.
Which of these is a description of
mutualism?
a. Both species exploit a common vital
resource.
b. One species is more complex than the
other.
c. Both species benefit from one another.
d. Neither species interacts with the other.
A certain species of bird eats insects off
the backs of cattle. If the relationship
between the birds and the cattle is
mutualistic, then the individuals
benefiting from the relationship are —
a. only the birds.
b. only the cattle.
c.
neither the birds nor the cattle.
d. both the birds and the cattle.
A certain species of bird eats insects off
the backs of cattle. If the relationship
between the birds and the cattle is
mutualistic, then the individuals
benefiting from the relationship are —
a. only the birds.
b. only the cattle.
c.
neither the birds nor the cattle.
d. both the birds and the cattle.
A rocky island appears as oceanic
waters recede. Which of the following
forms of vegetation would probably
appear first on the bare rocks?
a. lichens
b. weeds
c.
shrubs
d. pioneer trees
A rocky island appears as oceanic
waters recede. Which of the following
forms of vegetation would probably
appear first on the bare rocks?
a. lichens
b. weeds
c.
shrubs
d. pioneer trees
Over a period of 300 years, a mountain pond was
transformed into a forest. During this period,
several communities replaced existing
communities.
Which of the following best explains this
occurrence?
a. The water evaporates and leaves soil for
plants to grow.
b. The water evaporates and then precipitates
back into the lake.
c.
Primary succession
d.
Secondary succession
Over a period of 300 years, a mountain pond was
transformed into a forest. During this period,
several communities replaced existing
communities.
Which of the following best explains this
occurrence?
a. The water evaporates and leaves soil for
plants to grow.
b. The water evaporates and then precipitates
back into the lake.
c.
Primary succession
d.
Secondary succession
An environment can support only as
many organisms as the available
energy, minerals, and oxygen will allow.
Which term is best described by this
statement?
a. biological feedback
b. carrying capacity
c.
homeostatic control
d. biological diversity
An environment can support only as
many organisms as the available
energy, minerals, and oxygen will allow.
Which term is best described by this
statement?
a. biological feedback
b. carrying capacity
c.
homeostatic control
d. biological diversity
Which statement below
best explains what is
occurring during section II
in the population graph?
a. The population is at its
carrying capacity.
b. The population is affected by densitydependent factors.
c. The population is smaller than the
carrying capacity.
d. The birth rate is exceeding the death rate.
Which statement below
best explains what is
occurring during section II
in the population graph?
a. The population is at its
carrying capacity.
b. The population is affected by densitydependent factors.
c. The population is smaller than the
carrying capacity.
d. The birth rate is exceeding the death rate.
What does the process of photosynthesis
produce?
a. starch, which is metabolized into less
complex molecules by dehydration synthesis
b. protein, which is metabolized into less
complex molecules by dehydration synthesis
c. glycerol, which is metabolized into more
complex carbohydrates by dehydration synthesis
d. glucose, which is metabolized into more
complex carbohydrates by dehydration synthesis
What does the process of photosynthesis
produce?
a. starch, which is metabolized into less
complex molecules by dehydration synthesis
b. protein, which is metabolized into less
complex molecules by dehydration synthesis
c. glycerol, which is metabolized into more
complex carbohydrates by dehydration synthesis
d. glucose, which is metabolized into more
complex carbohydrates by dehydration synthesis
The process of photosynthesis
produces sugar, water and—
a. hydrogen gas.
b. nitrogen dioxide gas.
c. carbon dioxide gas.
d. oxygen gas.
The process of photosynthesis
produces sugar, water and—
a. hydrogen gas.
b. nitrogen dioxide gas.
c. carbon dioxide gas.
d. oxygen gas.
In the process of photosynthesis,
chlorophyll serves as –
a. an end-product.
b. a raw material.
c. an energy converter.
d. a hydrogen acceptor.
In the process of photosynthesis,
chlorophyll serves as –
a. an end-product.
b. a raw material.
c. an energy converter.
d. a hydrogen acceptor.
As respiration begins, glucose is broken
down into pyruvic acid and two molecules of
ATP are formed.
What will happen next in yeast cells if NO
oxygen is available?
a.
Krebs cycle
b.
photosynthesis
c.
alcoholic fermentation
d.
lactic acid fermentation
As respiration begins, glucose is broken
down into pyruvic acid and two molecules of
ATP are formed.
What will happen next in yeast cells if NO
oxygen is available?
a.
Krebs cycle
b.
photosynthesis
c.
alcoholic fermentation
d.
lactic acid fermentation
In humans, which substance is
produced anaerobically during
strenuous activity?
a. lactic acid
b. glycogen
c. carbon dioxide
d. alcohol
In humans, which substance is
produced anaerobically during
strenuous activity?
a. lactic acid
b. glycogen
c. carbon dioxide
d. alcohol
The fermentation of glucose by
yeast normally yields what?
a. lactic acid, CO2, and 2 ATP
b. alcohol, CO2, and 36 ATP
c. alcohol, CO2, and 2 ATP
d. CO2, H20, and 36 ATP
The fermentation of glucose by
yeast normally yields what?
a. lactic acid, CO2, and 2 ATP
b. alcohol, CO2, and 36 ATP
c. alcohol, CO2, and 2 ATP
d. CO2, H20, and 36 ATP
Which of the following is needed
to transfer and release energy?
a. calcium
b. phosphate
c. nitrate
d. potassium
Which of the following is needed
to transfer and release energy?
a. calcium
b. phosphate
c. nitrate
d. potassium
Energy stored in food is released
when –
a. chemical bonds are broken.
b. atomic nuclei are split
c. elements combine.
d. electrons are produced.
Energy stored in food is released
when –
a. chemical bonds are broken.
b. atomic nuclei are split
c. elements combine.
d. electrons are produced.
Which of the following provides
energy for metabolic reactions
within living systems?
a. proteins
b. ATP
c. lipids
d. carbohydrates
Which of the following provides
energy for metabolic reactions
within living systems?
a. proteins
b. ATP
c. lipids
d. carbohydrates
To remain healthy, organisms must be
able to obtain materials, change the
materials, move the materials around,
and get rid of waste. These activities
directly require—
a. energy from ATP
b. the replication of DNA
c.
nutrients from inorganic sources
d. manipulation of altered genes
To remain healthy, organisms must be
able to obtain materials, change the
materials, move the materials around,
and get rid of waste. These activities
directly require—
a. energy from ATP
b. the replication of DNA
c.
nutrients from inorganic sources
d. manipulation of altered genes
The energy an organism requires to
transport materials and eliminate
wastes is obtained directly from—
a. DNA
b. starch
c. hormones
d. ATP
The energy an organism requires to
transport materials and eliminate
wastes is obtained directly from—
a. DNA
b. starch
c. hormones
d. ATP
Which ecosystem has a better chance of
surviving when environmental conditions
change over a long period of time?
a. one with a great deal of genetic
diversity
b. one with plants and animals but no
bacteria
c. one with animals and bacteria but no
plants
d.
one with little or no genetic diversity
Which ecosystem has a better chance of
surviving when environmental conditions
change over a long period of time?
a. one with a great deal of genetic
diversity
b. one with plants and animals but no
bacteria
c. one with animals and bacteria but no
plants
d.
one with little or no genetic diversity
A disaccharide comes into contact with a
substance and then is broken down into two
monosaccharides. The substance binds
with the disaccharide but is not changed or
used in the reaction. The mystery
substance is probably—
a.
an enzyme.
b.
water.
c.
ATP.
d.
oxygen.
A disaccharide comes into contact with a
substance and then is broken down into two
monosaccharides. The substance binds
with the disaccharide but is not changed or
used in the reaction. The mystery
substance is probably—
a.
an enzyme.
b.
water.
c.
ATP.
d.
oxygen.
Under what conditions will a substance be likely
to enter a cell through diffusion?
a.
when the substance is a particle of food
b. when a molecule of the substance is very
large
c. when the concentration of the substance is
greater outside the cell than inside
d. when the concentration of the substance is
greater inside the cell than outside
Under what conditions will a substance be likely
to enter a cell through diffusion?
a.
when the substance is a particle of food
b. when a molecule of the substance is very
large
c. when the concentration of the substance is
greater outside the cell than inside
d. when the concentration of the substance is
greater inside the cell than outside
During a race, the body temperature of a
runner increases. The runner responds by
perspiring, which lowers body temperature.
This process is an example of –
a.
maintenance of homeostasis.
b.
an antigen-antibody reaction.
c.
an acquired characteristic.
d. environmental factors affecting
phenotype.
During a race, the body temperature of a
runner increases. The runner responds by
perspiring, which lowers body temperature.
This process is an example of –
a.
maintenance of homeostasis.
b.
an antigen-antibody reaction.
c.
an acquired characteristic.
d. environmental factors affecting
phenotype.
What usually results when an organism fails
to maintain homeostasis?
a. Growth rates within organs become
equal.
b.
The organism becomes ill or may die.
c. A constant sugar supply for the cells is
produced.
d. The water balance in the tissues of the
organism stabilizes.
What usually results when an organism fails
to maintain homeostasis?
a. Growth rates within organs become
equal.
b.
The organism becomes ill or may die.
c. A constant sugar supply for the cells is
produced.
d. The water balance in the tissues of the
organism stabilizes.
Which structures in a human
transmits electrochemical
messages?
a. veins
b. lymphocytes
c. neurons
d. nephrons
Which structures in a human
transmits electrochemical
messages?
a. veins
b. lymphocytes
c. neurons
d. nephrons
Structure X is most likely
a.
a sensory nerve
b.
an effector
c.
a ganglion
d.
a tympanum
Structure X is most likely
a.
a sensory nerve
b.
an effector
c.
a ganglion
d.
a tympanum
The part of the human central nervous
system that conducts impulses from the
brain to the peripheral nervous system
is protected by the –
a. vertebrae.
b. effectors.
c.
receptors.
d. glomeruli.
The part of the human central nervous
system that conducts impulses from the
brain to the peripheral nervous system
is protected by the –
a. vertebrae.
b. effectors.
c.
receptors.
d. glomeruli.
Effectors are best described as –
a. organs that interpret stimuli.
b. structures that respond to
stimuli.
c. tissues that initiate stimuli.
d. cells that transmit stimuli.
Effectors are best described as –
a. organs that interpret stimuli.
b. structures that respond to
stimuli.
c. tissues that initiate stimuli.
d. cells that transmit stimuli.
A change in the external
environment that initiates an
impulse is known as a –
a. synapse.
b. response.
c. stimulus.
d. receptor.
A change in the external
environment that initiates an
impulse is known as a –
a. synapse.
b. response.
c. stimulus.
d. receptor.
In humans, one function of an
interneuron is to relay impulses
directly from –
a. receptors to the brain.
b. receptors to other receptors.
c. motor neurons to receptors.
d. a sensory neuron to a motor
neuron.
In humans, one function of an
interneuron is to relay impulses
directly from –
a. receptors to the brain.
b. receptors to other receptors.
c. motor neurons to receptors.
d. a sensory neuron to a motor
neuron.
An example of a reaction to a stimulus
is –
a. a boy smelling a flower.
b. eyes blinking due to smoke in the air.
c. a person tapping on the shoulder of a
friend.
d. a loud clap of thunder following
lightning.
An example of a reaction to a stimulus
is –
a. a boy smelling a flower.
b. eyes blinking due to smoke in the air.
c. a person tapping on the shoulder of a
friend.
d. a loud clap of thunder following
lightning.
A student accidentally places her
hand on a tack and quickly pulls her
hand away. The tack represents –
a. a stimulus.
b. an impulse.
c. a response.
d. an effector.
A student accidentally places her
hand on a tack and quickly pulls her
hand away. The tack represents –
a. a stimulus.
b. an impulse.
c. a response.
d. an effector.
When a certain plant is without water for an
extended period of time, guard cells close
openings in the leaves of the plant. This activity
conserves water and illustrates –
a. cellular communication involving the action
of nerve cells and receptor sites.
b. an increase in rate of growth due to a low
concentration of water.
c. maintenance of dynamic equilibrium through
detection and response to stimuli.
d. a response to one biotic factor in the
environment.
When a certain plant is without water for an
extended period of time, guard cells close
openings in the leaves of the plant. This activity
conserves water and illustrates –
a. cellular communication involving the action
of nerve cells and receptor sites.
b. an increase in rate of growth due to a low
concentration of water.
c. maintenance of dynamic equilibrium through
detection and response to stimuli.
d. a response to one biotic factor in the
environment.
When a duck dives into cold water, the
capillaries in its skin constrict and move
deeper below the surface of the skin.
This reaction is an example of –
a. homeostasis.
b. synthesis.
c.
respiration.
d. excretion.
When a duck dives into cold water, the
capillaries in its skin constrict and move
deeper below the surface of the skin.
This reaction is an example of –
a. homeostasis.
b. synthesis.
c.
respiration.
d. excretion.
Which of the following is true of
hormones?
Their levels are constant.
They are an energy source.
They are an oxygen source.
They may be produced in one part of
an organism and have an effect in
another part of the organism.
Which of the following is true of
hormones?
a. Their levels are constant.
b. They are an energy source.
c. They are an oxygen source.
d. They may be produced in one part of
an organism and have an effect in
another part of the organism.
As a classroom project, a science class
raised a spider in an enclosure by itself.
Despite being alone, the spider spun a web
similar to webs spun by other spiders of its
species. The spider’s ability to spin a web
is an example of –
a.
innate behavior.
b.
camouflage.
c.
learned behavior.
d.
mimicry.
As a classroom project, a science class
raised a spider in an enclosure by itself.
Despite being alone, the spider spun a web
similar to webs spun by other spiders of its
species. The spider’s ability to spin a web
is an example of –
a.
innate behavior.
b.
camouflage.
c.
learned behavior.
d.
mimicry.
Plants produce substances that
regulate their growth patterns.
These substances are known as –
a. pigments.
b. auxins.
c. tropisms.
d. neurotransmitters.
Plants produce substances that
regulate their growth patterns.
These substances are known as –
a. pigments.
b. auxins.
c. tropisms.
d. neurotransmitters.
The diagram shows a growth
response in a plant.
This growth response results
from the –
a. conversion of mechanical energy into
radiant energy.
b. action of contractile fibers.
c. conversion of light energy into heat
energy.
d. action of plant hormones.
The diagram shows a growth
response in a plant.
This growth response results
from the –
a. conversion of mechanical energy into
radiant energy.
b. action of contractile fibers.
c. conversion of light energy into heat
energy.
d. action of plant hormones.
Which process in plants is not
controlled by hormones?
a. transport of glucose downward
in stems
b. production of flowers
c. development of seeds
d. growth of stem tips toward light
Which process in plants is not
controlled by hormones?
a. transport of glucose downward
in stems
b. production of flowers
c. development of seeds
d. growth of stem tips toward light
After several days near a window, a house plant
began to grow toward the window. This growth
pattern occurred because auxins –
a. prevent the growth of cells on the light side
of the plant.
b. stimulate the growth of cells on the dark side
of the plant.
c. are activated when they are exposed to
light.
d. are distributed evenly throughout the plant
stem.
After several days near a window, a house plant
began to grow toward the window. This growth
pattern occurred because auxins –
a. prevent the growth of cells on the light side
of the plant.
b. stimulate the growth of cells on the dark side
of the plant.
c. are activated when they are exposed to
light.
d. are distributed evenly throughout the plant
stem.