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Cell Cycle — Unit test Answers

15 verified answers
1
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Which statement describes thylakoids?

A
Glucose is formed here.
B
Water molecules are formed here.
C
Only photosystem II functions here.
D
Photosystems I and II function here.
2
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Which function of the cell cycle is especially important to burn victims?

A
growth of existing cells
B
repair of existing cells
C
protection of new cells
D
reproduction of new cells
3

Which term identifies a light-absorbing pigment?

A
photosystem
B
ferredoxin
C
thylakoid
D
chlorophyll
4

How does ATP supply energy for cellular activities?

A
by breaking off a phosphate group from its structure
B
by releasing the sugar molecule from its structure
C
by adding a phosphate group to its structure
D
by attaching itself to a glucose molecule
5

Tissue cultures (samples of cancer cells) are taken from cancer patients, and the cells are then grown in a laboratory. What is the purpose of growing cancer cells in a laboratory?

A
to test medicinal treatments before giving them to patients
B
to replace cancer cells with healthy cells
C
to provide evidence of cancer cells in the patient
D
to stop the cancer from growing in the patient
6

Which question can be answered by following the scientific method?

A
What was the highest temperature that was recorded yesterday?
B
What is the most interesting aspect of the light-dependent reactions?
C
How does a change in temperature affect the stomata of a plant?
D
How many stomata are there on this leaf?
7

Why is the Calvin cycle considered a dark reaction?

A
It occurs only at night.
B
It requires an absence of light.
C
It turns the plant dark green.
D
It can proceed in the dark.
8

Which statement best describes the overall change that occurs as a result of mitosis?

A
One cell becomes two cells that have identical copies of DNA.
B
One cell becomes two cells that have different copies of DNA.
C
Two cells become two cells that have identical copies of DNA.
D
Two cells become two cells that have different copies of DNA.
9

A cell begins to send out incorrect chemical signals to neighboring cells. During which phase of the cell cycle did the cause of the change most likely happen?

A
G1 phase
B
G2 phase
C
M phase
D
S phase
10

Which is the final electron acceptor in the electron transport chain of cellular respiration?

A
NADH
B
FADH2
C
oxygen
D
carbon dioxide
11

Which part of cell division is different in plant and animal cells?

A
cytokinesis
B
anaphase
C
mitosis
D
eukaryotic
12

DNA replication occurs during which phase of the eukaryotic cell cycle?

A
S phase
B
G1 phase
C
G2 phase
D
M phase
13

Which best illustrates the result of the process of meiosis?

A
A pea plant has the same flower color as its parent plants.
B
A daughter looks different from both her mother and her father.
C
A cheetah cub has very similar fur to its mother.
D
A Labrador puppy looks exactly like its father.
14

Which statement best distinguishes the light-dependent (L-D) reactions from the light-independent (L-IND) reactions?

A
The L-D reactions occur in the thylakoid membrane, and the L-IND reactions occur in the stroma.
B
The L-D reactions occur in the cytoplasm, and the L-IND reactions occur in the chloroplast.
C
The L-D reactions occur in the chloroplast, and the L-IND reactions occur in the mitochondria.
D
The L-D reactions occur in the stroma, and the L-IND reactions occur in the cytoplasm.
15

If an organism's diploid number is 12, what would be its haploid number?

A
3
B
6
C
24
D
48

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Cell Cycle — Unit test Answers — Biology_A_IC