quiz 6

Question 1

what are the three main stages of cell cycle

Answer 1

Inter phase, cytokineses, and mitosis

Question 2

what are the three phases of interphase

Answer 2

G2, G1, and S

Question 3

Which option best explains why mitosis alone does

not produce daughter cells.

Answer 3

The cell cycle, and thus reproduction, is completed only after cytokinesis occurs

Question 4

Choose the best answer that describes the events of

each stage of mitosis.

Answer 4

Prophase, mitotic spindle form and the
centrosomes migrate to opposite sides. Metaphase,
the spindle is fully formed, the chromosomes are
aligned single file. Anaphase, chromosomes
separate from the centermere, driving to arrive at
poles. Telophase, a nuclear envelope forms around
chromosomes, chromosomes uncoil, and nuceloi
reappear.

Question 5

Which answer best contrasts cytokinesis in a plant

cell and an animal cell ?

Answer 5

a cell wall forms in between the daughter plant
cells;. In animals, this occurs when a cleavage
furrow forms

Question 6

Suppose a drug stopped microtubule movement but
did not affect cytokinesis. Which answer best
hypothesizes the impact of the drug if it was applied
to a cell?

Answer 6

The drug may lead to inaccurate splitting of

chromosomes.

Question 7

If a plant cell completes the cell cycle in 24 hours,
how many total cells will be produced in after five
days?

Answer 7

16

Question 8

Describe how cyclins play a role in the cell cycle.

Answer 8

Cyclins drive the events of the cell cycle by
partnering with a family of enzymes called the
cyclin-dependent kinases (CDKs).

Question 9

Which option explains how the cancer cell cycle is

different from a normal cell cycle?

Answer 9

Instead of dying, cancerous cells multiply and

continue to reproduce other abnormal cells

Question 10

Which of the following accurately describes the

effects of carcinogens?

Answer 10

Carcinogens lead to damage to genetic material,

which may lead to uncontrolled cell division.

Question 11

If S phase was eliminated from the cell cycle, the

daughter cells would:

Answer 11

have half the genetic material found in the parental cell

Question 12

Which of the following help maintain the structure of

chromosomes and control the activity of genes?

Answer 12

Proteins

Question 13

Which of the following explains the difference

between embryonic stem cells and adult stem cells?

Answer 13

No answer text proAdult stem cells are more
limited in what cell types they can develop in
to.vided.

Question 14

What is the role of cyclins in a cell?

Answer 14

to signal for the cell to divide

Question 15

Describe how stem cells might be used to help a

patient who has a damaged spinal cord.

Answer 15

Stem cells may develop into new spinal cord cells.

Question 16

Explain how the lack of cyclins would affect the cell

cycle.

Answer 16

This would lead to uncontrollable cell division.

Question 17

What happens as a cell continues to grow?

Answer 17

As a cell grows, it may have more difficultly
supplying nutrients and expelling enough waste
products

Question 18

What happens as a cell continues to grow?

Answer 18

A cell’s ratio of surface area to volume will

decrease.

Question 19

Of the surface area-to-volume ratio, what

does surface area represent in a cell?

Answer 19

plasma membrane

Question 20

The cancer drug “Vinblastine” interferes with
the synthesis of microtubules. In mitosis, this would
interfere with what?

Answer 20

spindle formation