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Cellular Energy and Reproduction — Test Answers

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2
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What role does cellular respiration play in the carbon cycle?

A
It releases CO sub 2 to the atmosphere during acetyl CoA formation.
B
It removes CO sub 2 from the atmosphere during the citric acid cycle.
C
It releases CO sub 2 to the atmosphere during electron transport.
D
It removes CO sub 2 from the atmosphere during glycolysis.
3

It is crucial that the process of mitosis is error free. This is because otherwise healthy cells can

A
produce two identical cells.
B
become cancer cells.
C
grow into giant super cells.
D
undergo meiosis.
4

Umbilical cord blood is a rich source of stem cells. Which possible advance in biology would most likely be a result of performing research with an individual’s banked cord blood?

A
creation of a novel cancer cell line to test anticancer agents
B
creation of a skin graft for an unrelated burn victim
C
creation of a culture to produce vitamin E
D
creation of a personalized cell replacement therapy for the donor
6

Which specific process in the light-dependent reactions produces oxygen and hydrogen ions?

A
the excitation of electrons in photosytem I
B
the production of ATP
C
the formation of NADPH
D
the splitting of water
7

Which process is similar to binary fission?

A
crossing over
B
genetic variation
C
meiosis
D
mitosis
9

Which process connects glycolysis and the citric acid cycle?

A
acetyl CoA formation
B
electron transport
C
lactic acid formation
D
Krebs cycle
10

Which events take place in the light-dependent reactions of photosynthesis?

A
Light energy is converted to sugars; sugars are broken down for energy.
B
Light energy is captured by plants; light energy is converted to chemical energy.
C
Light energy is captured by plants; light energy is used to make sugar.
D
Light energy is converted to chemical energy; chemical energy is used to make sugar.
11

If a runner is doing vigorous exercise, which results from the anaerobic cellular process?

A
depletion of carbon dioxide
B
accumulation of lactic acid
C
depletion of ethanol
D
accumulation of oxygen
12

Which process produces clones?

A
asexual reproduction
B
chromosome duplication
C
gamete formation
D
sexual reproduction
14

Which best describes the processes of mitosis and meiosis?

A
Cells in mitosis and meiosis go through the PMAT stages once to produce diploid cells.
B
Cells in mitosis and meiosis go through the PMAT stages twice to produce haploid cells.
C
Cells in mitosis go through the PMAT stages twice to produce diploid cells while cells in meiosis go through PMAT stages once to produce haploid cells.
D
Cells in mitosis go through the PMAT stages once to produce diploid cells while cells in meiosis go through PMAT stages twice to produce haploid cells.
15

Which statement correctly compares the body’s energy storage molecules?

A
Lipids are the body’s main source of energy, but glycogen contains most of the body’s stored energy.
B
Glycogen is the body’s main source of energy, but lipids contain most of the body’s stored energy.
C
Proteins are the body’s main source of energy, but lipids contain most of the body’s stored energy.
D
Glycogen is the body’s main source of energy, but proteins contain most of the body’s stored energy.
16

Which speeds up the reaction between carbon dioxide and RuBP to restart the Calvin Cycle?

A
3-phosphoglycerate
B
light energy
C
rubisco
D
glyceraldehyde 3-phosphate
17

At which point is G3P removed from the Calvin cycle to be used in the production of carbohydrates?

A
immediately after regeneration
B
during carbon fixation
C
during photophosphorylation
D
immediately after reduction
18

Which correctly describes crossing over?

A
the process whereby non-sister chromatids exchange genetic material
B
the process whereby homologous chromosome pairs align randomly along the metaphase plate
C
the process whereby homologous chromosomes are pulled to opposite poles of the cell
D
the process whereby sister chromatids are pulled to opposite poles of the cell
19

How does interphase prepare cells for mitosis?

A
rest prior to cell division
B
division of cytoplasm
C
dissolution of nucleus and cell membrane
D
growth of cell and replication of DNA
20

Imagine that a disorder that causes the cell cycle to stop affects the muscle cells of a frog’s leg. What consequence is most likely to follow?

A
An injury to the muscle will not heal.
B
The frog will not be able to reproduce.
C
The frog will immediately not be able to use the muscle.
D
A broken bone in that leg will not mend.

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