Multiple Choice
Identify the letter of the choice that
best completes the statement or answers the question.
A
B
C
D
1.
Organisms, such as plants, that make their own food are called
a.
autotrophs.
b.
heterotrophs.
c.
thylakoids.
d.
pigments.
A
B
C
D
2.
Organisms that cannot make their own food and must obtain energy from the foods they
eat are called
a.
autotrophs.
b.
heterotrophs.
c.
thylakoids.
d.
plants.
A
B
C
D
3.
Which
of the following is an autotroph?
a.
mushroom
b.
dog
c.
monkey
d.
tree
A
B
C
D
4.
What
are the three parts of an ATP molecule?
a.
adenine, thylakoids, stroma
b.
stroma, grana, chlorophyll
c.
adenine, ribose, phosphate
d.
NADH, NADPH, and
FADH2
A
B
C
D
5.
Energy
is released from ATP when
a.
a phosphate group is added.
b.
adenine bonds to ribose.
c.
ATP is exposed to sunlight.
d.
a phosphate group is removed.
A
B
C
D
6.
Jan
van Helmont concluded that plants gain most of their mass from
a.
water.
b.
the soil.
c.
carbon dioxide in the air.
d.
oxygen in the air.
A
B
C
D
7.
Ingenhousz showed that plants produce oxygen bubbles when exposed to
a.
ATP.
b.
carbon dioxide.
c.
light.
d.
a burning candle.
A
B
C
D
8.
Photosynthesis uses sunlight to convert water and carbon dioxide into
a.
oxygen.
b.
high-energy sugars.
c.
ATP and oxygen.
d.
oxygen and high-energy sugars.
A
B
C
D
9.
In the
overall equation for photosynthesis, six molecules of carbon dioxide result in six molecules
of
a.
glucose.
b.
water.
c.
oxygen.
d.
ATP.
A
B
C
D
10.
Plants
gather the sun's energy with light-absorbing molecules called
a.
pigments.
b.
thylakoids.
c.
chloroplasts.
d.
glucose.
A
B
C
D
11.
Plants
take in the sun's energy by absorbing
a.
high-energy sugars.
b.
chlorophyll a.
c.
chlorophyll b.
d.
sunlight.
A
B
C
D
12.
Most
plants appear green because chlorophyll
a.
does not absorb green light.
b.
reflects violet light.
c.
absorbs green light.
d.
none of these
A
B
C
D
13.
Where
do the light-dependent reactions take place?
a.
in the stroma
b.
outside the chloroplasts
c.
in the thylakoid membranes
d.
only in chlorophyll molecules
A
B
C
D
14.
What
are the products of the light-dependent reactions?
a.
oxygen gas
b.
ATP
c.
NADPH
d.
all of these
A
B
C
D
15.
The
Calvin cycle is another name for
a.
light-independent reactions.
b.
light-dependent reactions.
c.
photosynthesis.
d.
all of these
A
B
C
D
16.
The
Calvin cycle takes place in the
a.
stroma.
b.
photosystems.
c.
thylakoid membranes.
d.
chlorophyll molecules.
A
B
C
D
17.
If
carbon dioxide is removed from a plant's environment, what would you expect to happen to its
production of high-energy sugars?
a.
More sugars will be produced.
b.
Fewer sugars will be produced.
c.
The same number of sugars will be produced but without
carbon dioxide.
d.
Carbon dioxide does not affect the production of
high-energy sugars in plants.
A
B
C
D
18.
Which
of the following affects the rate of photosynthesis?
a.
water
b.
temperature
c.
light intensity
d.
all of these
Figure
8-2
A
B
C
D
19.
Which
of the graphs in Figure 8-2 represents the effect of temperature on the rate of
photosynthesis?
A
B
C
D
20.
Which
of the graphs in Figure 8-2 represents the effect of light intensity on the rate of
photosynthesis?