AnswersBiologyCell Structure and Function

Practice Test Answers

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1
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What is shown in the image?

A
eukaryote
B
chloroplast
C
mitochondrion
D
prokaryote
2
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Which term identifies a light-absorbing pigment?

A
chlorophyll
B
ferredoxin
C
thylakoid
D
photosystem
3

What is carbon fixation, and how does it relate to photosynthesis?

A
It is the conversion of CO sub 2 into organic compounds, and it forms 3-PGA.
B
It is the reduction of CO sub 2 , and it occurs during the Calvin cycle.
C
It is the production of CO sub 2 during regeneration, and it forms RuBP.
D
It is the absorption of CO 2 from the air, and it occurs during the light-dependent reactions.
4

Which is a function of the cell membrane?

A
provides energy to the cell
B
performs photosynthesis
C
produces proteins
D
controls what enters and leaves the cell
7

Which homeostatic process is characterized by the diffusion of only water molecules?

A
passive transport
B
dynamic equilibrium
C
active transport
D
osmosis
8

How does ATP supply energy for cellular activities?

A
by attaching itself to a glucose molecule
B
by adding a phosphate group to its structure
C
by breaking off a phosphate group from its structure
D
by releasing the sugar molecule from its structure
9

Which statement describes thylakoids?

A
Photosystems I and II function here.
B
Water molecules are formed here.
C
Only photosystem II functions here.
D
Glucose is formed here.
10

Why is the Calvin cycle considered a dark reaction?

A
It requires an absence of light.
B
It occurs only at night.
C
It turns the plant dark green.
D
It can proceed in the dark.
12

Which organelles are not found in plant cells?

A
chloroplasts
B
mitochondria
C
centrioles
D
vacuoles
15

Which is a function of the cell structure that is labeled X?

A
It helps in cell metabolism.
B
It provides support.
C
It transports proteins.
D
It stores lipids.

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