AnswersCMS 2026-2027 Biology CREDIT RECOVERYCellular Energy and Reproduction

Practice Test Answers

20 verified answers
1
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One of the primary advantages of cell culture is the ability to isolate a single type of cell from a multicellular organism. How has this advance changed the study of biology?

A
Cultures with single cell types behave in culture exactly as they would behave in a tissue or organ.
B
Scientists know that any response during an experiment is associated only with that cell type.
C
Single-type cultures are easier and cheaper to maintain than cultures made of mixed cell types.
D
Scientists can completely avoid using animal or human test subjects during their experiments.
2
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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 absorption of CO 2 from the air, and it occurs during the light-dependent reactions.
C
It is the reduction of CO sub 2 , and it occurs during the Calvin cycle.
D
It is the production of CO sub 2 during regeneration, and it forms RuBP.
3

What is the end result of the eukaryotic cell cycle?

A
no parent cells and two daughter cells
B
one parent cell and one daughter cell
C
one parent cell and two daughter cells
D
two parent cells and one daughter cell
4

Why is the Calvin cycle considered a dark reaction?

A
It occurs only at night.
B
It can proceed in the dark.
C
It requires an absence of light.
D
It turns the plant dark green.
5

How does ATP supply energy for cellular activities?

A
by adding a phosphate group to its structure
B
by breaking off a phosphate group from its structure
C
by attaching itself to a glucose molecule
D
by releasing the sugar molecule from its structure
6

Which series of diagrams correctly represents the order of mitosis?

A
Image with description Four cell diagrams show stages of mitosis from left to right: chromosomes inside a nucleus, two chromosome groups inside dotted circular outlines, chromatids separating toward opposite poles, and chromosomes aligned at the center with spindle fibers attached.
B
Image with description Four cell diagrams show stages of mitosis from left to right: chromosomes inside a nucleus, chromosomes aligned at the center with spindle fibers attached, chromatids separating toward opposite poles, and two chromosome groups inside dotted circular outlines.
C
Image with description Four cell diagrams show stages of mitosis from left to right: chromosomes inside a nucleus, chromatids separating toward opposite poles, chromosomes aligned at the center with spindle fibers attached, and two chromosome groups inside dotted circular outlines.
D
Image with description Four cell diagrams show stages of mitosis from left to right: chromosomes inside a nucleus, two chromosome groups inside dotted circular outlines, chromosomes aligned at the center with spindle fibers attached, and chromatids separating toward opposite poles.
7

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

A
carbon dioxide
B
oxygen
C
NADH
D
FADH sub 2
8

Which statement describes thylakoids?

A
Only photosystem II functions here.
B
Photosystems I and II function here.
C
Glucose is formed here.
D
Water molecules are formed here.
9

Rapid reproduction is an advantage of which process?

A
asexual reproduction
B
gamete formation
C
sexual reproduction
D
chromosome duplication
10

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

A
6
B
24
C
48
D
3
11

Which term identifies a light-absorbing pigment?

A
photosystem
B
thylakoid
C
chlorophyll
D
ferredoxin
12

How does adenosine triphosphate (ATP) become adenosine diphosphate (ADP)?

A
ATP stores energy as a phosphate bond is formed.
B
ATP releases energy as a phosphate bond is formed.
C
ATP stores energy as a phosphate bond is broken.
D
ATP releases energy as a phosphate bond is broken.
13

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

A
anaphase
B
cytokinesis
C
mitosis
D
eukaryotic
14

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

A
G1 phase
B
G2 phase
C
M phase
D
S phase
15

Which term is correctly paired with its role in the body?

A
ADP – a molecule that releases energy when it forms ATP
B
glucose – a sugar found in blood that can be broken down to produce ATP
C
glycogen – a hormone found in blood that regulates blood glucose levels
D
insulin – a sugar that regulates blood glycogen levels
16

Which of these can combine in a cell to convert a lower-energy molecule into a higher-energy molecule?

A
ADP plus cap p
B
ATP plus cap p plus energy
C
ADP plus cap p plus energy
D
ATP plus cap p
17

Which advance resulted from the development of a culture technique for muscle cells?

A
smallpox inoculant
B
insulin production
C
vitamin E production
D
polio vaccination
18

Which best defines a diploid cell during meiosis?

A
a cell that has half the number of chromosomes as the parent cell
B
a cell that has half the number of chromosomes as the daughter cell
C
a cell that has double the number of chromosomes as the daughter cell
D
a cell that has double the number of chromosomes as the parent cell
19

Which statement best summarizes the importance of meiosis to reproduction?

A
It produces gametes that are needed for sexual reproduction.
B
It produces diploid cells that are needed for asexual reproduction.
C
It produces diploid cells that are needed for sexual reproduction.
D
It produces gametes that are needed for asexual reproduction.
20

What prohibits lipids from being a readily available energy source?

A
Fat must be broken down into fatty acids before being converted to glucose.
B
Lipids are structural components, so they are a last-resort energy source.
C
The conversion of fat to glucose is controlled by insulin.
D
Lipids are only used to create enzymes, hormones, and antibodies.

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