AnswersFirst Semester BiologyCell Cycle

Cell Cycle Answers

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1
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At which point in the eukaryotic cell cycle does mitosis occur?

A
before the G1 phase
B
after the G2 phase
C
following the S phase
D
after the G0 phase
2
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An error occurs when the DNA of a cell is copied. However, the cell does not divide after the error is detected. Which statement best describes the cell cycle for this cell?

A
An error during the G1 phase is corrected during the G2 phase.
B
An error during the S phase is corrected during the G2 phase.
C
An error during the G1 phase is corrected during the S phase.
D
An error during the S phase is corrected during mitosis.
3

What is the function of interphase in the eukaryotic cell cycle?

A
cell repair
B
cell growth
C
cell reproduction
D
cell division
4

Disruptions in the cell cycle can lead to serious health problems. Which statement best describes cancer cells as a result of disrupted cell cycle regulation?

A
Cancer cells cannot enter the circulatory system.
B
Cancer cells grow in a controlled and regulated manner.
C
Cancer cells spread to other parts of the body.
D
Cancer cells lose nutrients to healthy cells.
5

What process is typical of cancer?

A
replacement of damaged cells
B
DNA replication
C
cellular death
D
uncontrolled cell division
6

A mutation occurs that prevents a cell from taking in the glucose that it needs for energy production. What is most likely to happen?

A
A tumor will form.
B
The cell will divide uncontrollably.
C
The cell will die.
D
Nutrients are stolen from normal cells nearby.
7

What is/are the function(s) of the cell cycle?

A
DNA replication
B
development of positive mutations
C
prevention of cancer
D
growth, repair, and reproduction of cells
8

The diagram shows the stages of the eukaryotic cell cycle.Which stage is labeled C in the diagram?

Question illustration
A
M phase
B
G0 phase
C
S phase
D
G2 phase
9

The graph shows the rates of malignant melanoma for the years 1973–2004.Based on the information in the graph, what conclusions can be drawn about the rate of skin cancer in men compared to that in women?

Question illustration
A
Malignant melanoma decreased at a faster rate in men than in women.
B
Malignant melanoma decreased at a faster rate in women than in men.
C
Malignant melanoma increased at a faster rate in men than in women.
D
Malignant melanoma increased at a faster rate in women than in men.
10

The graph shows the rate of malignant melanoma for the years 1973–2004.Based on the information in the graph, which conclusion can be drawn?

Question illustration
A
Fewer cases of melanoma were reported over time.
B
More women were out in the sun over time.
C
Women use sunscreen about twice as often as men use sunscreen.
D
The rate of malignant melanoma has increased in both men and women.
11

The diagram shows the stages of the eukaryotic cell cycle.Which stage is labeled E in the diagram?

Question illustration
A
mitosis
B
interphase
C
S phase
D
G0 phase
12

Which is the main reason cells are replaced in the body?

A
The cells are too large.
B
The cells are inactive.
C
The cells are damaged.
D
The cells are cancerous.
13

The table shows the rate of melanoma by gender.Consider the number of males who were diagnosed with melanoma in 2005. What quantity does this number represent?

Question illustration
A
In 2005, 27.99 percent of males were diagnosed with melanoma.
B
In 2005, 27.99 males out of 100 were diagnosed with melanoma.
C
In 2005, 27.99 cases of melanoma were diagnosed in males.
D
In 2005, 27.99 males out of every 100,000 were diagnosed with melanoma.
14

Why is a skin graft necessary when cells are damaged by a third-degree burn?

A
to promote the repair of existing cells
B
to protect the area from infection
C
to prevent mutations
D
to replace damaged nerves
15

Which can disrupt the cell cycle?

A
mutation
B
G0 phase
C
replication
D
cancer
16

At which point in the eukaryotic cell cycle does a DNA mutation most likely occur?

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

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