Transcript Study of Biology The study of all living things Living things are called organisms Bacteria, protists, fungi, plants, & animals.

Study of Biology
The study of all living
things
Living things are called
organisms
Bacteria, protists, fungi,
plants, & animals
1
All Organisms Share
Common Characteristics
Cellular Organization
Homeostasis
Metabolism
Respond to stimuli
Reproduce
Heredity (DNA)
Growth
2
Cellular
Organization
Cells are the smallest living unit of an
organism
Cells have parts called organelles that
do different jobs
All cells are surrounded by a cell
membrane that controls what enters &
leaves the cell
Same basic structure in all organisms
3
Organisms are Grouped by
their Number of Cells
Unicellular Organisms
Living Organism Made Up Of One
Cell
Multicellular Organisms
Living Organism Made Up Of Many,
Specialized Cells
4
Homeostasis
Keeping the internal environment
of the Cell or organism within the
ranges required for life
Stable internal conditions of pH,
temperature, water balance, etc.
5
Metabolism
The sum of all chemical
reactions carried out by an
organism
Sunlight is the source of energy
for plants - photosynthesis
Plants serve as the source of
energy for other organisms –
cellular respiration
6
Response
Organisms respond to their
external environment
Stimuli like Temperature, Water,
Food Supplies, etc.
Plants bend toward sunlight, a
bird fluffs feathers for warmth
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Reproduction
Sexual Reproduction
Involves 2 parents
Offspring DIFFERENT from
parents
Asexual reproduction
Only 1 parent
Offspring identical to parent
8
Heredity
All cells contain DNA
(deoxyribose nucleic acid) carries
the genetic code for all organisms
DNA codes for the proteins that
make up cells & do all the work
The DNA molecule is the same in ALL
organisms
9
Growth
All Organisms grow and develop
Organisms grow by producing
more cells & by cell enlargement
Organisms develop as they
mature into an adult organism
10
Where Life Begins
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