Transcript Document 7358138

Life Science
Released SOL Items
According to the graph, which air pollutant
decreased the most from 1970 to 1991?
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ula
ad
rt i
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Le
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Pa
Su
lf u
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ox
ide
ox
ide
nm
on
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rb
o
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Ca
1
tes
A. Carbon
monoxide
B. Sulfur oxides
C. Particulates
D. Lead
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Which of these best describes a relationship
shown by this African energy pyramid?
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or
s
da
t
re
pr
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sa
sa
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o..
pr
ey
of
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pr
ey
th
e
is
ion
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re
th
e
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r.
ato
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Gi
ra
f fe
5
Gi
ra
f fe
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el
3
Th
2
Th
1
el
ion
D.
re
d
C.
ap
B.
.
The lion is a
predator of the
giraffes.
The lion is the
prey of the
giraffes.
Giraffes are the
prey of the trees.
Giraffes are
predators of the
lion.
is
A.
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Which of the following classification
groups contains organisms that have
the most characteristics in common?
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ie
s
s
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ec
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Sp
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la
s
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yl
um
4
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Ph
3
do
m
2
in
g
1
25%
C
Kingdom
Phylum
Class
Species
K
A.
B.
C.
D.
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In this diagram of a single-celled
organism, which organelle functions as
a place to store extra water?
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m
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cle
Nu
to
p
las
ol
e
cu
Va
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Cy
2
ll m
em
1
br
an
e
Cell membrane
Vacuole
Cytoplasm
Nucleus
Ce
A.
B.
C.
D.
us
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eff e
ct o
of C
O ..
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Cy
1
h an
ge
D.
The
C.
exc
B.
The exchange of
CO2 and O2 in an
ecosystem
The effect of
limiting factors in a
biome
Cycling of nutrients
in a community
Environmental
pressures on a
population
The
A.
.
f li m
it in
cli n
g ..
go
.
f nu
En
tri e
viro
nt s
nm
in..
en t
al p
res
s...
Which concept is best illustrated by
this diagram?
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What process makes food for plants?
Reproduction
Photosynthesis
Respiration
Condensation
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tio
n
de
n
es
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sa
pi
ra
tio
is
yn
t
14
on
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C
22
7
R
21
6
ot
os
5
Ph
4
he
s
tio
ro
du
c
3
ep
2
R
1
n
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n
A.
B.
C.
D.
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Hypothesis: The addition of a fertilizer to
soil will increase plant growth.
Which of these experimental designs would best
test this hypothesis?
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A.
B.
D.
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3
C
2
A
1
B
C.
Which animal has a life span closest to
that of sheep?
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w
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Co
5
rse
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Ho
3
Ca
2
Do
1
t
Dog
Cat
Horse
Cow
g
A.
B.
C.
D.
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DNA is essential to living
organisms because it —
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ar
t
ap
k
ca
pr
ev
n
br
ea
td
is
en
sp
i
a
is
n
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14
ca
4
ea
s
he
l
ra
l
co
et
ic
ge
n
th
e
s
3
rr
ie
2
ca
1
es
ix
carries the genetic code
is a spiral helix
can prevent diseases
can break apart
de
A.
B.
C.
D.
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Which of these shows the correct
sequence of development?
A. Organs → cells →
tissues → systems
B. Cells → tissues →
organs → systems
C. Systems → tissues →
cells → organs
D. Tissues → cells →
systems → organs
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Which of these would be the best way to prove
that a pine stick is more flexible than an oak
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stick?
A.
B.
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D
3
B
2
A
1
C
D.
C.
What most likely happened to
species that are found in the fossil
record but have no living members?
A. They had offspring of a
different species.
B. They mutated to other
species.
C. They became extinct.
D. They never really
existed.
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ex
lly
rr
ea
ve
be
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i..
.
tin
ct
ex
m
e
ca
ed
m
ut
at
16
ne
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18
ey
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10
Th
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9
ey
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8
Th
22
7
ey
21
6
Th
5
to
rin
g
of
fs
p
d
4
ha
3
ey
2
Th
1
ot
h.
.
o.
..
.
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Which instrument would most
accurately and precisely determine
the mass of a toy car?
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A
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ua
te
d
cy
ba
la
n
lin
de
r
ce
e
sc
al
rin
sp
A
15
gr
ad
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8
18
A
22
7
tr
ip
l
21
6
A
5
g
ht
m
et
lig
ro
ni
c
4
ec
t
3
el
2
n
1
ebe
am
An electronic light meter
A spring scale
A triple-beam balance
A graduated cylinder
er
A.
B.
C.
D.
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Organisms that absorb nutrients
from dead plants and animals are
called —
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uc
er
s
vo
re
s
rs
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pr
od
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rb
i
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6
m
po
se
5
co
4
de
3
rn
i
2
ca
1
he
carnivores
decomposers
herbivores
producers
vo
re
s
A.
B.
C.
D.
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Each student in a science class of 25 conducts the same
experiment. One student gathers all the data from her
classmates and summarizes the results of the
experiment for the class. She compares the data she
personally recorded with the class data. Which of these
might indicate to her that her results are valid?
Three other classes performed the
same experiment.
The same experiment was repeated
two years in a row.
Many other students recorded data
similar to hers.
Another student in her class reached a
different conclusion.
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rc
las
se
s.
am
..
ee
x
pe
Ma
rim
ny
en
ot
...
he
rs
tu
An
de
ot
nt
he
s.
rs
..
tu
de
nt
in
he
...
2
15
16
17
es
1
Th
D.
ot
he
C.
re
e
B.
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Th
A.
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Thrips are tiny insects that can easily be seen on
roses. The thrip population changes shown in the
graph above are probably caused by —
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5
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um
an .
..
lim
atic
cha
sea
ng
so n
e
al c
i nc
h an
rea
g es
sed
u se
of
ins
e...
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rc
D.
am
ajo
C.
rea
ses
B.
in h
increases in
human
population
a major
climatic
change
seasonal
changes
increased
use of
insecticides
i nc
A.
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A student designs and builds a 1:1000 scale
model of the Mt. Fuji volcano in Japan. Since
Mt. Fuji is about 3,800 m high, what is the height
of his scale model?
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m
m
17
20
00
5
3, 8
4
0m
3
38
2
3. 8
1
8m
0.38 m
3.8 m
380 m
3,800 m
0. 3
A.
B.
C.
D.
When plants undergo
photosynthesis, they produce —
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hy
ni
dr
og
tro
g
en
en
yg
ox
di
ox
n
3
rb
o
2
ca
1
en
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carbon dioxide
oxygen
hydrogen
nitrogen
id
e
A.
B.
C.
D.
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20
How far offshore is the deepest point of
the ocean on this graph?
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0k
m
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5
0k
m
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3
00
2
50
1
m
0m
5000 m
160 km
240 km
0m
A.
B.
C.
D.
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Mendel proposed that traits observed in pea
plants resulted from a combination of
“factors” inherited from each parent. His
description of these “factors” can be
considered the first scientific definition of
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the role of —
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r ib
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s
is
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le
i
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nu
c
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8
ll
22
7
ce
21
6
ne
5
ge
4
ei
os
3
m
2
os
1
es
ribosomes
meiosis
genes
cell nuclei
om
A.
B.
C.
D.
Which of the organisms in a forest
ecosystem is an example of a
producer?
Squirrels
Oak trees
Black bears
Bacteria
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te
ria
rs
es
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ac
25
10
19
B
24
9
be
a
23
8
k
22
7
la
c
21
6
B
5
tr
e
4
ak
3
O
2
ui
rr
el
s
1
25% 25% 25% 25%
Sq
A.
B.
C.
D.
20
Botanists often use leaves to identify plants.
Which trait of the leaves shown would be most
useful in identifying the plants they came from?
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nc
e.
se
fl
ea
ab
to
ce
or
em
en
of
tio
n
nc
15
v.
.
le
af
th
e
le
a
of
th
e
lo
r
Co
8
en
4
18
Pr
es
3
Ar
ra
ng
2
Fu
1
f
A. Color of the leaf
B. Function of the
leaf
C. Arrangement of
leaves on a
stem
D. Presence or
absence of
veins
..
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20
A tapeworm lives in human intestines,
absorbing the nutrients that would normally
be absorbed by the person. This eventually
causes the person health problems. The
relationship between the tapeworm and the
human is —
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25
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ni
v
om
18
he
uc
er
y
at
or
/p
re
17
er
/p
ro
d
24
9
19
um
23
8
ns
22
7
co
21
6
vo
re
/
5
rb
i
4
pr
ed
/h
o
ite
3
ra
s
2
pa
1
or
e
parasite/host
predator/prey
herbivore/omnivore
consumer/producer
st
A.
B.
C.
D.
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A plant’s green color is due to the
presence of which organelle?
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Va
cu
on
dr
io
ol
e
s
uc
N
14
ito
ch
5
M
4
le
u
la
s
3
hl
or
op
2
C
1
n
25% 25% 25% 25%
Chloroplast
Nucleus
Mitochondrion
Vacuole
t
A.
B.
C.
D.
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20
The diagram shows a graduated cylinder
containing water. From which position will the
most accurate measure of the volume of the
water be made?
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19
4
14
20
n
13
si
tio
12
Po
11
3
25
10
n
24
9
si
tio
23
8
Po
22
7
2
21
6
n
5
si
tio
4
Po
3
n
2
si
tio
1
1
Position 1
Position 2
Position 3
Position 4
Po
A.
B.
C.
D.
Which of these has the greatest
influence over how big a baby elephant
will grow?
12
.
16
17
t..
s
ra
s
of
g
th
e
of
ze
15
on
s
tre
e
d
fo
o
of
nt
14
i..
a.
..
...
yg
e
ox
of
nt
13
ty
pe
11
e
25
10
Th
24
9
si
23
8
e
22
7
Th
21
6
am
ou
5
e
4
Th
3
e
2
Th
1
am
ou
A. The amount of oxygen
in the air
B. The amount of food
available
C. The size of the trees in
the jungle
D. The type of grass on the
plains
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20
At what speed would a car have to
move in order to travel 20 kilometers
in two hours?
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25
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10
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13
14
15
16
17
18
km
/h
r
21
6
19
40
5
km
/h
r
4
20
3
km
/h
r
2
5
1
25% 25% 25%
10
5 km/hr
10 km/hr
20 km/hr
40 km/hr
km
/h
r
A.
B.
C.
D.
25%
20
In the food web shown, which of the following
consumers eats only producers?
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25
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ou
se
21
6
M
5
x
4
Fo
3
wl
2
O
1
wk
Hawk
Owl
Fox
Mouse
Ha
A.
B.
C.
D.
20
Which of the following is used to
measure the mass of an object?
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5
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22
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25
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7
8
9
10
11
12
13
14
15
ra
d
3
16
G
2
ar
om
et
er
lin
d
B
ua
te
M
d
cy
et
ric
al
an
B
1
er
ru
le
r
Balance
Metric ruler
Graduated cylinder
Barometer
ce
A.
B.
C.
D.
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18
19
20
Which biome contains large
populations of grazing herbivores, few
species of birds, and deep, rich soil?
4
5
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22
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25
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7
8
9
10
11
12
13
14
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16
de
3
A
2
an
d
gr
as
sl
t
17
A
ci
du
A
1
fo
re
s
nd
ra
tu
ta
A
ou
s
A taiga
A tundra
A deciduous forest
A grassland
ig
a
A.
B.
C.
D.
25% 25% 25% 25%
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19
20
What is next in this series?
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25
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10
11
12
13
14
15
16
17
s
18
ne
lle
23
8
19
rg
a
22
7
O
21
6
rg
a
5
O
4
st
em
s
ita
t
3
ab
2
H
1
Sy
ni
sm
s
Habitats
Organisms
Systems
Organelles
s
A.
B.
C.
D.
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20
Which of these is due entirely to
inheritance in humans?
25% 25% 25% 25%
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24
25
8
9
10
11
12
13
15
du
ra
bo
ne
s
nc
e
lo
r
e
14
16
17
en
22
7
18
ro
k
21
6
B
5
Ey
4
co
sk
di
ng
3
ea
2
R
1
En
Reading skill
Eye color
Endurance
Broken bones
ill
A.
B.
C.
D.
19
20
How are humans classified within a
food chain?
Producers
Consumers
Decomposers
Manufacturers
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25
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10
11
12
13
rs
s
su
m
er
14
15
16
17
an
uf
ac
23
8
18
M
22
7
om
po
se
21
6
ec
5
D
4
C
3
on
uc
2
Pr
od
1
tu
re
rs
25% 25% 25% 25%
er
s
A.
B.
C.
D.
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20
This chart represents the type and number of items
collected in a beach cleanup. Based on the above
chart, what percentage of the total items collected
from the beaches was plastic?
25% 25% 25% 25%
46%
49%
56%
70%
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23
24
25
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8
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10
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46
17
18
19
20
%
21
6
70
5
%
4
56
3
%
2
%
1
49
A.
B.
C.
D.
Some snapdragon seeds were studied in the
experiment below. The seeds were placed in a
dish lined with a moist paper towel. Which of
these is the independent (manipulated) variable
in this experiment?
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14
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16
m
be
18
e.
..
of
at
u
ro
re
fs
wa
t
of
nt
17
Th
pr
ou
t
er
..
ee
of
s
ty
pe
12
pe
r
25
10
19
te
m
24
9
e
23
8
Th
22
7
nu
21
6
e
5
Th
4
am
ou
3
e
2
Th
1
.
d
The type of seed
The amount of water used
The number of sprouts
The temperature of each dish
e
A.
B.
C.
D.
s
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20
Which of the following is produced
as a result of photosynthesis?
2
3
4
5
21
22
23
24
25
6
7
8
9
10
11
12
13
14
15
16
17
18
C
1
ar
bo
n
O
W
xy
di
ox
ge
n
r
at
e
ea
H
id
e
25% 25% 25% 25%
Heat
Water
Oxygen
Carbon dioxide
t
A.
B.
C.
D.
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20
Lions usually live in prides made up of a few adult
females, an adult male, and some younger lions.
The females hunt together and the kill is shared
with the pride. The lions’ method of hunting best
illustrates —
cooperation
competition
territoriality
parasitism
12
13
co
14
15
16
ity
17
18
iti
sm
11
19
ra
s
25
10
25%
pa
24
9
ria
l
23
8
rr
ito
22
7
te
21
6
tit
io
n
5
m
pe
4
co
3
tio
n
2
op
1
25% 25% 25%
er
a
A.
B.
C.
D.
20
Which of the following are
characteristics of the most productive
ecological environment?
25
10
11
12
14
15
16
18
..
ra
tu
re
s
tu
re
s
17
an
.
an
...
m
pe
ra
te
te
m
pe
ra
tu
re
s
an
a.
.
ra
tu
re
s
te
m
pe
13
te
m
pe
24
9
w
23
8
Lo
22
7
ol
d
21
6
C
5
ot
4
H
3
le
2
St
ab
1
...
25% 25% 25% 25%
A. Stable temperatures and
high rainfall amounts
B. Hot temperatures and low
rainfall amounts
C. Cold temperatures and low
rainfall amounts
D. Low temperatures and
high rainfall amounts
19
20
The picture shows a pond ecosystem. What would
most likely happen if all the lily plants were removed
from this community?
2
3
4
5
21
22
23
24
25
6
7
8
be m
ore
. ..
dw
a
ter
The
c
urr.
re w
..
oul d
The
be m
anim
ore
. ..
al s
w ou
ld h
a. .
1
9
10
11
12
13
14
15
16
17
18
pon
D.
The
C.
re w
B.
oul d
There would be more
oxygen in the air.
The pond water
currents would be
slower.
There would be more
kinds of animals in
the pond.
The animals would
have fewer places to
hide.
The
A.
25% 25% 25% 25%
19
20
The sea urchin shown has radial symmetry. This
means that its body parts are —
22
23
24
25
7
8
9
10
11
12
13
14
15
17
to
f
to
b
un
c
er
tio
efo
no
n
rm
ed
la.
.
i...
..
on
un
cti
ne
sig
16
18
le
21
6
ab
5
el y
4
lik
3
de
2
eq
1
ua
lly
ar
ra
n
D.
dt
of
C.
da
B.
ro
u..
equally arranged
around a central
point
designed to function
in seawater
likely to be reformed
if any part of the
body is damaged
able to function on
land and in the water
ge
A.
25% 25% 25% 25%
19
20
According to this graph, which of these is most
important in developing the biomass of these plants?
25% 25% 25% 25%
3
4
5
21
22
23
24
25
6
7
8
9
10
11
12
13
14
15
16
17
18
19
n
I ro
ium
gne
s
Ma
2
Su
rat
e
Nit
1
lf at
es
Nitrates
Sulfates
Magnesium
Iron
s
A.
B.
C.
D.
20
John and Emily were experimenting with the
effects of road salt on plant growth. To do this,
they watered plants daily with the same amount
of salt water. They could best improve their
experiment by —
24
25
9
10
11
12
13
15
16
17
pl
an
to
ha
l
ft
he
lo
r
fo
od
co
lt
wa
t
er
..
...
.
n.
..
14
at
er
in
g
23
8
18
w
22
7
di
ng
21
6
ad
5
ol
in
g
4
co
3
cr
ea
2
in
1
si
n
g
th
e
D.
sa
C.
th
e
B.
..
25% 25% 25% 25%
increasing the amount of salt added
to the water each day
cooling the salt water before
watering the plants
adding food color to see how far
the salt penetrates the plants
watering half the plants with pure
water and half with salt water
am
ou
A.
19
20
In this food web, which organism has
the greatest number of food sources?
25% 25% 25% 25%
23
24
25
8
9
10
11
12
13
14
15
16
17
18
19
us
e
22
7
20
Mo
21
6
rew
5
Sh
4
wk
3
Ha
2
ak
1
e
Snake
Hawk
Shrew
Mouse
Sn
A.
B.
C.
D.
In which of the following environments
would you expect to find the greatest
number of different species of plants and
animals per square mile?
12
13
14
A
16
17
fo
re
st
.
...
ic
a
lr
ai
n
Vi
rg
in
i
a
on
at
fie
15
tr
op
11
18
A
25
10
st
ur
e
24
9
pa
23
8
A
22
7
w
21
6
A
5
he
d
4
la
n
3
is
2
n
1
in
ld
ne
ar
th
e
N
So
or
t..
.
...
A. An island near the South
Pole
B. A wheat field in North Dakota
C. A pasture on a Virginia farm
D. A tropical rain forest in
Panama
.
25% 25% 25% 25%
19
20
The picture shows dinosaur tracks found
in rocks. How many dinosaurs left their
tracks here?
25%
25%
25%
2
4
14
24
4
5
21
22
23
24
25
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
24
3
14
2
4
1
2
A.
B.
C.
D.
25%
Which of these best completes the
statement about the interaction of the
respiratory system with the circulatory
system? The lungs add —
25
10
11
12
13
14
16
...
id
e
to
en
17
th
e
to
bl
o
th
e
th
e
to
le
15
18
di
ox
24
9
n
23
8
rb
o
22
7
yg
21
6
ox
5
bi
4
od
d
bl
oo
bl
oo
th
e
to
nt
s
3
tr
ie
2
nu
1
ca
nutrients to the blood
bile to the blood
oxygen to the blood
carbon dioxide to the
blood
d
A.
B.
C.
D.
25% 25% 25% 25%
19
20
A tick that feeds on the blood of
animals is a —
predator
host
competitor
parasite
5
21
22
23
24
25
6
7
8
9
10
11
12
13
15
16
17
ite
ra
s
tit
o
st
ho
14
18
pa
4
m
pe
3
co
2
pr
ed
1
r
25% 25% 25% 25%
at
or
A.
B.
C.
D.
19
20
Which of the following do typical plant
cells have that typical animal cells
do not?
23
24
25
8
9
10
11
12
13
N
14
15
16
17
ts
la
s
hl
or
op
22
7
18
C
21
6
ito
ch
5
M
4
uc
la
s
3
yt
op
2
C
1
on
dr
ia
le
i
Cytoplasm
Nuclei
Mitochondria
Chloroplasts
m
A.
B.
C.
D.
25% 25% 25% 25%
19
20
What is the mass of the rock?
25% 25% 25% 25%
24
25
9
10
11
12
13
14
15
16
17
19
g
g
18
6. 0
23
8
20
35
22
7
4. 6
21
6
35
5
0. 6
4
35
3
5. 6
2
33
1
g
335.6 g
350.6 g
354.6 g
356.0 g
g
A.
B.
C.
D.
The picture shows the results of putting a drop of orange
ink from a marking pen on a piece of filter paper and
allowing the colors in the ink to separate. About how
much farther on the filter paper has the yellow pigment
moved than the red pigment? 25% 25% 25% 25%
22
23
24
25
7
8
9
10
11
12
13
14
15
16
17
18
19
cm
21
6
20
3. 5
5
cm
4
2. 7
3
cm
2
1. 6
1
cm
0.5 cm
1.6 cm
2.7 cm
3.5 cm
0. 5
A.
B.
C.
D.
The kangaroo rat is able to get all of the
water it needs through its food and,
therefore, never needs to drink liquids.
This animal has adapted to survive in
which biome? 25% 25% 25% 25%
25
10
11
12
13
14
15
16
17
18
d
sl
an
24
9
19
ra
s
23
8
G
22
7
er
t
21
6
es
5
D
4
Tu
3
re
s
2
Fo
1
nd
ra
Forest
Tundra
Desert
Grassland
t
A.
B.
C.
D.
20
The chart shows the results of an experiment to test the
effects of different plant lights on plant seedling growth.
Which group of plants showed the greatest gain in
height?
25% 25% 25% 25%
5
21
22
23
24
25
6
7
8
9
10
11
12
13
14
15
16
17
18
p4
p3
19
Gr
ou
4
Gr
ou
3
Gr
ou
2
Gr
ou
1
p2
Group 1
Group 2
Group 3
Group 4
p1
A.
B.
C.
D.
20
Which of these could cause a decrease
in the number of squirrels in a population?
12
sq
th
e
in
in
e
e
ea
s
ea
s
15
16
u.
..
t..
.
co
th
e
in
e
ea
s
14
m
pe
...
sq
...
op
e
co
in
e
ea
s
13
in
cr
11
17
n
25
10
A
24
9
in
cr
23
8
n
22
7
A
21
6
in
cr
5
n
4
A
3
n
2
A
1
25% 25% 25% 25%
in
cr
A. An increase in cooperation
with birds in the area
B. An increase in the
squirrels’ territory
C. An increase in competition
with other nut-eating
animals
D. An increase in the
squirrels’ food supply
18
19
20
The picture represents five red blood cells seen through
a microscope. The lines represent a scale also visible
through the microscope. Each division on the scale
represents one micrometer. Use the scale to estimate
the diameter of the average red blood cell.
25
11
12
13
14
15
16
17
18
19
rs
me
te
icr
o
me
te
rs
icr
o
me
te
me
te
10
3m
24
9
—1
23
8
12
22
7
1m
21
6
—1
5
10
4
8m
icr
o
3
7—
2
5m
icr
o
1
rs
4—5 micrometers
7—8 micrometers
10—11 micrometers
12—13 micrometers
4—
A.
B.
C.
D.
rs
25% 25% 25% 25%
20
Which level of organization below is
the most basic or primary level of
organization?
5
21
22
23
24
25
6
7
8
9
10
11
12
13
14
15
16
st
em
n
17
sy
18
n
4
rg
a
3
O
2
rg
a
ss
ue
Ti
C
1
O
Cell
Tissue
Organ
Organ system
el
l
A.
B.
C.
D.
25% 25% 25% 25%
19
20
Ellen noticed that she often sneezes when she visits
her friend Robert, who has a cat and a parrot. Ellen
wonders if she may have allergies to Robert’s pets and
decides to conduct a scientific investigation. What
should Ellen do next?
1
2
3
4
5
21
22
23
24
25
6
7
8
9
10
11
12
13
14
15
..
le .
n
El ...
le
n
...
16
17
El
le
n
D.
...
C.
El
B.
25% 25% 25% 25%
le
n
Ellen should tell Robert that she cannot
visit him until he gives away his pets.
Ellen should visit Sue who has a horse,
a dog, a goldfish, and a hamster.
Ellen should call her doctor and insist
that she needs shots for allergies.
Ellen should visit a friend who has only
cats and one who has only parrots.
El
A.
18
19
20
Sponges are classified as animals
because they cannot —
25% 25% 25% 25%
23
24
25
8
9
10
11
12
13
16
d
fo
o
...
as
te
n
tc
h
of
w
15
ir
ow
w
n
ir
o
th
e
ak
e
14
ca
22
7
tr
id
21
6
ge
5
m
4
th
e
p.
to
ce
pl
a
fro
m
3
ov
e
2
m
1
pr
od
fo
od
move from place to place
make their own food
get rid of waste products
catch their own food
..
A.
B.
C.
D.
17
18
19
20
Northern garter snakes exhibit a unique behavior
in which they gather in deep dens by the
hundreds or thousands. They then coil together in
a huge ball. This behavior could help to —
25
10
11
12
13
14
16
...
es
co
ur
c
ge
n
so
17
ox
y
fo
o
d
ca
m
se
15
se
24
9
18
cr
ea
23
8
in
22
7
ca
te
21
6
lo
5
cr
ea
4
in
3
ou
f
lo
s
at
e
du
c
2
re
1
la
g
s
reduce heat loss
increase camouflage
locate food sources
increase oxygen
consumption
he
A.
B.
C.
D.
e
25% 25% 25% 25%
19
20
When plants perform photosynthesis,
they use sunlight to produce food. This
is an example of light energy being
converted to —
25% 25% 25% 25%
24
25
9
10
11
12
13
14
15
16
18
rg
y
ne
al
e
le
17
em
ic
23
8
ch
22
7
ni
ca
21
6
ec
ha
5
m
4
ec
3
el
2
en
tri
ca
l
at
he
1
ne
rg
y
er
gy
heat energy
electrical energy
mechanical energy
chemical energy
en
er
gy
A.
B.
C.
D.
19
20
Mendel’s early work with pea plants
demonstrated a significant genetic discovery.
The crossing of homozygous tall pea plants
with homozygous short pea plants always
resulted in tall plants and demonstrated that
tallness in pea plants is a trait that is —
25% 25% 25% 25%
12
13
14
15
16
17
18
19
20
ve
11
si
25
10
ce
s
24
9
re
23
8
te
d
22
7
ut
a
21
6
m
5
t
4
m
in
an
3
do
2
en
de
1
d
blended
dominant
mutated
recessive
bl
A.
B.
C.
D.
Many scientists believe that nuclear fusion
will become a possible energy source
within the next 10 years. What resource
would be most effective in tracking the
progress of this energy source?
24
25
9
10
11
12
13
14
15
16
18
r..
.
pe
c
tif
i
ys
ic
s
te
..
al
.
17
ie
n
23
8
Sc
22
7
ph
21
6
A
5
ch
4
A
lo
ca
3
e
2
Th
1
em
ic
...
The local newspaper
A chemical encyclopedia
A physics textbook
Scientific periodical
ln
A.
B.
C.
D.
...
25% 25% 25% 25%
19
20
The loss of which of these would have
the least effect on the water cycle?
25% 25% 25% 25%
24
25
9
10
11
12
13
14
15
16
17
18
19
s
23
8
20
an
t
22
7
Pl
21
6
s
5
im
al
4
An
3
rs
2
Ri
ve
1
il
Soil
Rivers
Animals
Plants
So
A.
B.
C.
D.
Which of these processes helps
extract energy from food?
24
25
9
10
11
12
13
14
15
17
tio
n
ul
a
n
16
ir c
23
8
18
C
22
7
Ex
21
6
D
5
ig
e
tio
4
ro
du
c
3
ep
2
R
1
cr
et
io
st
io
n
Reproduction
Digestion
Excretion
Circulation
n
A.
B.
C.
D.
25% 25% 25% 25%
19
20
The picture shows a test for non-slip surfaces to
be used on a ramp. Which of these must be done
to provide more meaningful results?
12
13
14
15
18
..
le.
so
wi
th
es
sa
m
es
th
e
of
rd
s
17
ho
e
sa
..
o.
..
16
ho
11
19
es
25
10
Us
24
9
he
23
8
et
22
7
Us
21
6
oa
5
eb
4
Us
3
et
2
Us
1
he
sa
m
es
D.
Use the same shoe on each surface
Use boards of the same thickness
Use the same shoe size for each type of
shoe
Use shoes with soles designed for sports
ho
e
A.
B.
C.
si.
.
25% 25% 25% 25%
20
According to this diagram, both of these
fish —
5
21
22
23
24
25
6
7
8
9
10
11
12
13
14
15
16
17
fro
m.
..
eir
en
ral
s
ine
er g
y
thr
o
u..
ste
wa
xic
ff t
o
18
t th
4
19
ge
3
ei
nm
2
t ak
1
gi v
eo
D.
tb
C.
ac
t er
ia
eat bacteria
give off toxic
wastes
take in minerals
through their gills
get their energy
from other
animals
ea
A.
B.
s
25% 25% 25% 25%
20
The picture above illustrates the habitat of a
population of animals and its distance from the
nearest water source. How far does an animal
have to travel to obtain water?
25% 25% 25% 25%
24
25
9
10
11
12
13
14
15
6
16
17
18
19
m
et
er
s
23
8
0
22
7
30
21
6
m
et
er
s
5
50
4
12
3
nt
im
et
er
2
ce
1
m
et
er
s
6 centimeters
12 meters
50 meters
300 meters
s
A.
B.
C.
D.
20
Most of the hereditary information
within the cell is carried in the —
22
23
24
25
7
8
9
10
11
12
13
14
15
16
17
ie
s
bo
d
ol
gi
21
6
18
G
5
ro
m
os
4
ch
3
va
cu
om
os
2
r ib
1
om
es
ol
es
25% 25% 25% 25%
ribosomes
vacuoles
chromosomes
Golgi bodies
es
A.
B.
C.
D.
19
20
In which biome would you find the
most variety of life?
21
22
23
24
25
6
7
8
9
10
11
12
13
15
t
fo
re
s
d
sl
an
er
t
es
14
16
17
18
ai
n
5
R
4
ra
s
3
G
2
Tu
1
D
Tundra
Desert
Grassland
Rain forest
nd
ra
A.
B.
C.
D.
25% 25% 25% 25%
19
20
According to the graph, which angle of release
would cause the javelin to go the farthest?
21
22
23
24
25
6
7
8
9
10
11
12
13
14
15
75
16
17
18
19
20
°
5
25%
30
4
°
3
25%
45
2
°
1
°
75°
60°
45°
30°
25%
60
A.
B.
C.
D.
25%
Which type of characteristics can
be inherited?
A. Those controlled by
genes
B. Those caused by
accidents
C. Those produced by
exercise
D. Those produced by
diet
25
10
11
12
14
16
di
et
ed
pr
od
uc
e
pr
od
uc
e
15
by
e.
..
by
ed
by
d
us
e
ca
e
13
os
24
9
17
Th
23
8
os
22
7
Th
21
6
os
5
Th
4
ac
...
by
nt
ro
lle
d
co
e
3
os
2
Th
1
...
25% 25% 25% 25%
18
19
20
An experiment was set up to measure the
distance a snail would travel in 5 minutes.
Which of these rulers should be used to give
the most precise measurement?
A.
B.
C.
25% 25% 25% 25%
D.
5
21
22
23
24
25
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
D
4
C
3
B
2
A
1
The ermine is a small animal that lives along
riverbanks and in forests. During the spring
and summer, it grows a brown coat. It sheds
the brown coat during the autumn and grows a
white one. This change of color in the ermine’s
coat allows it to —
24
25
9
10
11
12
13
14
15
17
18
d.
..
...
fo
o
w
a
ta
16
d
23
8
fin
22
7
ca
te
21
6
lo
5
tr
ac
4
at
3
de
2
hi
1
...
...
hide from predators
attract a mate
locate a water supply
find food more easily
fr
om
A.
B.
C.
D.
25% 25% 25% 25%
19
20
In this plant cell, which cellular structure is
responsible for storing food, water, and wastes?
25% 25% 25% 25%
23
24
25
8
9
10
11
12
13
14
15
17
s
uc
le
u
ol
e
16
18
el
lm
em
22
7
19
C
21
6
N
5
Va
4
cu
la
s
3
yt
op
2
C
1
br
an
e
Cytoplasm
Vacuole
Nucleus
Cell membrane
m
A.
B.
C.
D.
20
Which of these populations is most likely to
increase if the number of grasshoppers
decreases?
2
3
4
5
21
22
23
24
25
6
7
8
9
10
11
12
13
14
15
16
17
Pr
ay
1
in
g
18
w
l
O
Fr
og
an
t
Plant
Frog
Praying mantis
Owl
Pl
A.
B.
C.
D.
m
an
tis
25% 25% 25% 25%
19
20
When animals hibernate, their heart
rate and respiration decrease and they
lose consciousness. Why do some
animals hibernate?
11
12
13
14
15
e.
..
fte
th
e
17
ra
ir
fu
r
su
m
m
tim
e
...
er
gy
16
st
a
25
10
18
re
24
9
To
23
8
ve
22
7
gi
21
6
ns
5
co
4
To
3
in
2
To
1
cr
e
as
e
er
ve
en
th
e
D.
To
C.
...
B.
..
25% 25% 25% 25%
To increase their body fat during
cold periods
To conserve energy usage during
the winter
To give their fur time to grow
longer and thicker
To rest after a summer of high
activity
ir
bo
d
A.
19
20
Which of the following organisms break
down dead material and return the
substances to the environment?
Grasshopper and worm
Grass and algae
Bacteria and fungi
Snake and grasshopper
24
25
9
10
11
12
13
14
gr
as
d
an
ac
16
sh
o
fu
n
d
an
te
ria
an
s
ra
s
G
15
17
e
23
8
ak
22
7
Sn
21
6
B
5
pp
er
e
al
ga
d
w
d
an
er
op
p
4
sh
3
ra
s
2
G
1
gi
25% 25% 25% 25%
or
m
A.
B.
C.
D.
18
19
20
In the scale model below, one centimeter is equal
to one-half of a meter. The mailbox is 2 truck
lengths away from the model truck. How far away
is the mailbox from the truck on the real street?
25% 25% 25% 25%
22
23
24
25
7
8
9
10
11
12
13
14
15
16
17
18
m
et
er
s
21
6
19
20
5
m
et
er
s
4
15
3
m
et
er
s
2
10
1
m
et
er
s
5 meters
10 meters
15 meters
20 meters
5
A.
B.
C.
D.
20
Wherever civilizations have flourished, forests
have been destroyed. Hundreds of years ago
in England, rivers and seaports began to fill
with silt after the forests were destroyed. What
caused the silt to fill the seaports?
25% 25% 25% 25%
5
21
22
23
24
25
6
7
8
9
10
11
12
13
14
15
17
n
at
io
io
n
es
si
cc
16
Irr
ig
4
Su
hi
ca
3
tro
p
2
Eu
1
Er
os
on
Eutrophication
Succession
Erosion
Irrigation
tio
n
A.
B.
C.
D.
18
19
20
According to the scale shown below, what
is the approximate length of the baby blue
whale?
25% 25% 25% 25%
2 meters
4 meters
6 meters
10 meters
23
24
25
8
9
10
11
12
13
14
15
16
17
18
19
20
m
et
er
s
22
7
10
21
6
m
et
er
s
5
6
4
m
et
er
s
3
4
2
m
et
er
s
1
2
A.
B.
C.
D.
Which of these best enables this animal
to rid its body of excess heat in a hot
desert environment?
25% 25% 25% 25%
23
24
25
8
9
10
11
12
13
14
15
fu
r
dy
Its
co
fe
e
ib
l
16
sa
n
22
7
17
Its
21
6
fle
x
5
Its
4
e
ea
3
la
rg
e
2
Its
1
lo
r
t
Its large ears
Its flexible feet
Its sandy color
Its fur
rs
A.
B.
C.
D.
18
19
20
What type of animals live in a wetland?
Which type of report would probably provide the
most accurate answer to the above question?
4
5
21
22
23
24
25
6
7
8
9
10
11
12
13
14
15
.
i..
ni
sm
s
of
W
et
l..
.
...
re
d
17
rg
a
nd
16
“O
3
ir d
s
2
“E
1
“W
at
e
rQ
an
ge
ua
lit
D.
“B
C.
25% 25% 25% 25%
..
B.
“Water Quality in Wetlands,” published by
the United States Geological Survey
“Endangered Species in Our Wetlands,” by
a reporter for the Daily Globe Newspaper
“Birds of Wetlands” in Science, the journal
for the American Association for the
Advancement of Science
“Organisms in Wetlands,” a report on the
internet by the Chesapeake Bay
Foundation
y
A.
18
19
20
Asexual reproduction involves only
one parent. The offspring of this type
of reproduction have —
13
of
...
..
A
in
c
DN
15
16
th
a
lf
o
ti
ft
s
he
di
ffe
s
ti
th
a
14
A
12
17
N
11
D
25
10
eha
24
9
on
23
8
A
22
7
N
21
6
D
5
re
n
th
e.
to
al
nt
ic
id
e
4
A
3
N
2
D
1
t.
..
A. DNA identical to the
DNA of the parent
B. DNA that is different
from the parent
C. one-half of the DNA of
the parent
D. DNA that is incomplete
om
pl
et
e
25% 25% 25% 25%
18
19
20
According to the chart, which set of conditions
represents the process of photosynthesis?
25% 25% 25% 25%
A
B
C
D
4
5
21
22
23
24
25
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
D
3
C
2
A
1
B
A.
B.
C.
D.
A student wishes to test the hypothesis that
adding antifreeze to water lowers the freezing
point of the water. What would be the dependent
(responding) variable?
Amount of water put into a
container
Amount of antifreeze added to the
water
Temperature at which the
water/antifreeze mixture freezes
Type of thermometer used to
measure the freezing point
24
25
9
10
11
12
13
14
16
...
rm
om
et
er
...
hi
ch
...
at
w
ez
e
17
th
e
an
tif
re
of
15
of
23
8
m
pe
22
7
Te
21
6
nt
5
m
ou
4
A
3
m
ou
2
A
1
nt
of
w
at
er
pu
ti
n.
.
D.
18
pe
C.
Ty
B.
25% 25% 25% 25%
ra
tu
re
A.
19
20
The relationship between the algae
and the frog may be described as —
consumer → producer
consumer → decomposer
producer → consumer
producer → decomposer
A.
B.
C.
D.
1
2
3
4
5
21
22
23
24
25
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Many complex genetic experiments have been
performed on plants. One of the very successful ones
crossed wild wheat with a fungus-resistant wild grass.
This ultimately produced a variety of wheat that was
resistant to a very destructive parasitic fungus which
kills nonresistant plants. Why would such
experimentation benefit humans?
25%25%25%25%
12
13
14
15
us
17
18
..
...
..
on
e
is.
16
ro
du
.
11
19
tp
25
10
he
a
24
9
W
23
8
un
g
22
7
ef
21
6
Th
5
he
a
4
W
3
ef
2
Th
1
un
g
us
C.
D.
..
The fungus is also dangerous to humans.
Wheat is one of the most important food
crops worldwide.
The fungus could spread to all other plants
Wheat products made from infected plants
would taste bad.
ti
s
A.
B.
20
Students measured and recorded the density of 4
samples. Using the density column and the data table
shown below, which of the samples will probably float
on top of the oil?
25%
25%
18
19
25%
Sample A
Sample B
Sample C
Sample D
23
24
25
8
9
10
11
12
13
14
15
16
17
m
pl
e
Sa
m
pl
e
Sa
20
D
22
7
m
pl
e
21
6
Sa
5
C
4
m
pl
e
3
Sa
2
A
1
B
A.
B.
C.
D.
25%
24
25
9
10
11
12
13
14
17
k
ro
c
th
e
so
th
e
16
al
...
...
ft
tis
s
k
ro
c
th
e
15
au
se
23
8
18
ec
22
7
au
se
21
6
au
se
5
ec
4
B
3
ec
2
B
1
au
se
th
e
so
ft
tis
s
D.
ec
C.
B
B.
B
Because the soft tissues decayed
before the fossil could be formed
Because the rock breaks down soft
tissues
Because the soft tissues were always
eaten by scavengers
Because the rock always smashed the
soft tissues flat
...
A.
br
...
Fossils are evidence of living things that were
alive many, many years ago and often consist
of the skeletons of creatures imbedded in rock.
Why don’t fossils contain the animal’s soft
tissues, as well?
25% 25% 25% 25%
19
20
Which process is the foundation for the
food web?
22
23
24
25
7
9
10
11
12
13
14
15
16
yn
t
17
18
ov
em
he
s
is
tio
n
sa
or
a
8
M
21
6
ot
os
5
Ph
4
nd
en
3
Co
2
ap
1
tio
n
Evaporation
Condensation
Photosynthesis
Movement
Ev
A.
B.
C.
D.
en
t
25% 25% 25% 25%
19
20
The island of Guam had no native snake
species until the brown tree snake was
introduced. What effect did this egg-eating
snake have on the native bird populations?
24
25
9
10
11
12
13
16
17
la
t
io
ns
.
..
po
pu
la
t
la
t
15
io
ns
.
io
ns
.
..
14
18
ir d
23
8
B
22
7
po
pu
21
6
ir d
5
ir d
4
B
3
ir d
2
B
1
B
po
pu
D.
po
pu
C.
io
n.
..
B.
..
25% 25% 25% 25%
Bird populations were not affected
by the snake’s introduction.
Bird populations increased as the
birds preyed on the snakes.
Bird populations decreased as the
snakes fed on the bird eggs.
Bird populations increased as the
snakes eliminated predators.
la
t
A.
19
20
A student wishes to measure the mass
of an object. Which instrument would
be most useful?
25% 25% 25% 25%
22
23
24
25
7
8
9
10
11
12
13
15
16
17
nm
ey
er
fla
ru
le
r
M
et
ric
er
lin
d
d
ua
te
14
Er
le
21
6
ra
d
5
G
4
cy
ba
l
am
be
3
le
2
Tr
ip
1
sk
Triple beam balance
Graduated cylinder
Metric ruler
Erlenmeyer flask
an
ce
A.
B.
C.
D.
18
19
20
The picture shows the growth curve of a
bacterial population. According to this
information, the bacterial population doubles
every —
25% 25% 25% 25%
23
24
25
8
9
10
11
12
13
14
15
16
17
18
tes
tes
19
mi
nu
22
7
20
60
21
6
mi
nu
5
30
4
mi
nu
3
20
2
3m
inu
1
tes
3 minutes
20 minutes
30 minutes
60 minutes
tes
A.
B.
C.
D.
The presence of permafrost is a
characteristic of which major biome?
4
5
21
22
23
24
25
6
7
8
9
10
11
12
13
14
ds
t
16
17
G
ra
s
sl
an
fo
re
s
ig
a
15
m
pe
3
Te
2
ra
te
Tu
1
Ta
Tundra
Taiga
Temperate forest
Grasslands
nd
ra
A.
B.
C.
D.
25% 25% 25% 25%
18
19
20
Plants release oxygen into the air as a
result of photosynthesis. Which of these
do plants need for photosynthesis?
Carbon dioxide
Nitrogen
Methane
Hydrogen
21
22
23
24
25
6
7
8
9
10
11
12
13
14
16
M
yd
et
ha
ne
en
itr
og
15
17
18
H
5
N
di
ox
4
n
3
ar
bo
2
C
1
ro
ge
n
25% 25% 25% 25%
id
e
A.
B.
C.
D.
19
20
A student wanted to test the hypothesis that
adding antifreeze to water lowers the freezing
point of water. The student found that pure water
froze at 0°C, while the water/antifreeze mixture
froze at 20°C. In order to confirm the results, the
student should repeat the experiment using —
25% 25% 25% 25%
21
22
23
24
25
6
7
8
9
10
11
12
13
14
15
16
17
a
5
di
ffe
re
4
a
3
co
nt
ai
2
a
1
nt
...
di
ffe
re
nt
ex
...
ac
tly
th
e
...
...
a container of a different size
a different amount of antifreeze
a different amount of water
exactly the same set-up as the
first experiment
ne
ro
A.
B.
C.
D.
18
19
20
This experiment was set up to test the
hypothesis that plants grow faster in green
light. What is the independent variable in this
experiment?
23
24
25
8
9
10
11
12
13
14
15
16
18
19
ot
fp
ze
o
of
l
of
17
Si
22
7
lo
r
21
6
Co
5
nt
4
Am
ou
3
pe
2
Ty
1
ig
h
wa
te
r
pl
a
nt
Type of plant
Amount of water
Color of light
Size of pot
of
A.
B.
C.
D.
t
25% 25% 25% 25%
20
Of the following, which is the correct
progression in the food chain?
A. Producers → herbivores
→ carnivores
B. Herbivores → producers
→ carnivores
C. Producers → carnivores
→ herbivores
D. Carnivores → herbivores
→ producers
1
2
3
4
5
21
22
23
24
25
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Which of these are found in plant cells
but not in animal cells?
3
4
5
21
22
23
24
25
6
7
8
9
10
11
12
13
14
15
16
ul
um
s
17
re
tic
ic
as
m
do
pl
2
En
1
br
an
e
ts
la
s
C
C
el
lm
em
ito
ch
M
hl
or
op
Mitochondria
Chloroplasts
Cell membranes
Endoplasmic reticulum
on
dr
ia
A.
B.
C.
D.
25% 25% 25% 25%
18
19
20
A student predicts that more sugar will
dissolve in warm water than in cold water. She
puts some water in a container, adds sugar,
and then stirs. The amount of undissolved
sugar is then observed. When this student
repeats the experiment to verify her prediction,
the only thing that should change is the —
5
21
22
23
24
25
6
7
8
9
10
11
12
13
14
15
16
m
pe
4
to
f.
3
te
2
ou
n
1
..
ra
tu
am
re
ou
...
nt
of
am
...
ou
nt
of
...
amount of water used
temperature of the water
amount of sugar used
amount of time stirring
am
A.
B.
C.
D.
25% 25% 25% 25%
17
18
19
20
The function of a cell nucleus is to —
A. direct the activities of
the cell
B. help the cell expel
waste
C. digest foreign
substances
D. transport substances
around the cell
25
10
11
12
14
16
...
an
c
ub
st
su
gn
tf
or
ei
15
es
t..
.
bs
w
el
xp
ll
e
ce
th
e
13
sp
or
ts
24
9
17
tr
an
23
8
ge
s
22
7
di
21
6
lp
5
he
4
as
of
...
tie
s
tiv
i
ac
he
tt
3
re
c
2
di
1
te
25% 25% 25% 25%
18
19
20
Which of these best shows what is happening to the
cell in pure water?
25% 25% 25% 25%
1
2
3
4
5
21
22
23
24
25
6
7
8
9
10
11
12
13
14
15
16
17
18
19
D
D.
C
C.
B
B.
A
A.
20
24
25
9
10
11
12
13
14
15
rs
fe
e
t
er
s
16
17
18
lo
lit
e
23
8
19
ki
22
7
bi
c
21
6
cu
5
ill
ili
t
4
m
3
bi
c
2
cu
1
m
et
er
s
A student conducted an experiment on plant
growth that required adding about one cupful of
liquid fertilizer to several plants each week. In
order to accurately measure the fertilizer given
to each plant, the fertilizer volume should be
measured in — 25% 25% 25% 25%
A. cubic meters
B. milliliters
C. cubic feet
D. kiloliters
20
One way plants and animals are
alike is that they both —
25% 25% 25% 25%
move to get their food
make their own food
use carbon dioxide
use oxygen
21
22
23
24
25
6
7
8
9
10
11
12
13
e
ca
us
rb
o
n
ox
di
ox
yg
en
id
e
fo
od
w
n
ir
o
th
e
14
15
e
5
us
4
ak
e
3
m
2
m
1
ov
e
to
ge
tt
he
ir
fo
od
A.
B.
C.
D.
16
17
18
19
20
A new medication dissolves blood clots. However, if
too much is used, excessive bleeding occurs. Which
method should scientists use to determine the best
dosage of this new medication?
23
24
25
8
9
10
11
12
13
14
15
e
sa
ge
do
y
th
17
th
e
tim
es
th
.
..
t..
.
bj
ec
st
te
th
e
16
on
l
22
7
18
ry
21
6
Va
5
ve
4
Ha
3
e
2
Us
1
pe
op
le
of
su
m
an
y
D.
an
ge
C.
Ch
B.
...
25% 25% 25% 25%
Use people of many different ages as test
subjects
Have the test subjects eat a wide variety
of foods with the medication
Change the times the medication is given
to determine if timing affects bleeding
Vary only the dosages of the medication
while keeping everything else constant
d.
..
A.
19
20
Suppose that in a certain area, mice are the
main food source for wolves. Based on the
graph, in which year would there be the least
amount of competition among wolves for food.
25%
25%
25%
22
23
24
25
7
8
9
10
11
12
13
14
15
16
17
18
19
20
90
21
6
19
5
85
4
19
3
19
2
75
1
80
1975
1980
1985
1990
19
A.
B.
C.
D.
25%
Some students counted the birds in an area. They
counted the number of species present and the number
of birds in each species. Which of these would be best
to use to report the results?
A.
B.
25%
D.
4
5
21
22
23
24
25
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
D
3
C
2
B
1
A
C.
25% 25% 25%
Which amphibian is most aquatic?
A.
B.
25%
25%
25%
D.
4
5
21
22
23
24
25
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
D
3
C
2
A
1
B
C.
25%
In humans, which of these is required
for carrying oxygen from the lungs to
body cells?
22
23
24
25
7
8
9
10
11
12
13
14
16
lls
ce
lls
oo
d
ce
d
Pl
15
17
18
bl
21
6
hi
te
5
W
4
bl
oo
3
R
2
le
ts
at
e
as
m
Pl
1
ed
Plasma
Platelets
Red blood cells
White blood cells
a
A.
B.
C.
D.
25% 25% 25% 25%
19
20
The primary producer in the
ecosystem below is the —
25% 25% 25% 25%
24
25
9
10
11
12
13
14
15
16
17
18
19
x
23
8
fo
22
7
k
21
6
w
5
ha
4
bb
i
3
ra
2
pl
1
t
plant
rabbit
hawk
fox
an
t
A.
B.
C.
D.
20
During mitosis, the doubling of
chromosomes ensures that both
new cells —
12
13
15
to
he
d
at
ta
c
en
t
16
e.
..
ct
io
n
fu
n
of
si
ze
th
e
ic
e
14
17
m
ai
n
11
re
25
10
di
ffe
r
24
9
rv
e
23
8
se
22
7
tw
21
6
e
5
ar
4
...
t..
ne
ge
al
tic
id
en
3
ve
2
ha
1
s
25% 25% 25% 25%
A. have identical genetic
makeup
B. are twice the size of the
parent cell
C. serve different functions
D. remain attached to each
other
18
19
20
Many living organisms have body structures
that go from very simple to very complex.
Which of these places the structures in the
correct order, from least complex to most
complex?
25% 25% 25% 25%
13
14
15
,.
..
ue
em
17
,o
rg
an
e,
su
tis
16
18
tis
s
12
el
l,
11
C
25
10
sy
st
24
9
el
l,
23
8
C
22
7
n,
21
6
rg
a
5
O
4
,o
rg
an
...
ce
ll,
su
tis
n,
rg
a
3
st
em
,o
2
Sy
1
,.
..
System, organ, tissue, cell
Organ, tissue, cell, system
Cell, system, organ, tissue
Cell, tissue, organ, system
e.
..
A.
B.
C.
D.
19
20
Which of the following is an
example of a decomposer at work
in the food web?
A. A tree growing in a field
B. A grasshopper eating
leaves
C. A seagull catching a fish
D. A fungus growing on a
log
25
10
11
12
13
14
16
17
gr
ow
in
g
on
...
h
fis
a
in
g
at
ch
s
ul
lc
op
pe
sh
15
ng
u
24
9
18
fu
23
8
A
22
7
ag
21
6
se
5
A
4
gr
as
3
A
2
A
1
tr
ee
gr
ow
in
g
re
in
a
at
in
fie
l
g.
..
d
25% 25% 25% 25%
19
20