TOPIC 21 - Cell Cycle Regulation

Question 1

In which Cell Cycle Phase(s) is DNA Damage Assessed or Monitored?

(a) . G1
(b) . G1 + G2
(c) . G1, S, + G2
(d) . G1 + S
(e) . G0

Answer 1

(c). G1, S, + G2

Question 2

In which Cell Cycle Phase(s) does Cell Cycle Arrest occur if DNA Damage is detected?

(a) . G1
(b) . G1 + G2
(c) . G1, S, + G2
(d) . G1 + S
(e) . G0

Answer 2

(b). G1 + G2 ??

Question 3

How many times is DNA Replication allowed to occur?

(a) . Never
(b) . Once
(c) . Twice
(d) . Three times
(e) . Four times

Answer 3

(b). Once

Question 4

For Animal Cells, what PROMOTES Entrance into the Cell Cycle?

(a) . Nutrients
(b) . Cell Size
(c) . Growth Factors
(d) . (a) + (b)
(e) . None of the above

Answer 4

(d). Nutrients + Cell Size ??

Question 5

There is NO Cell Cycle Checkpoint in Mitosis.

(a) . TRUE
(b) . FALSE

Answer 5

(b). False ??

Question 6

During which Phase does the Spindle Assembly Checkpoint occur?

Answer 6

Spindle Assembly Checkpoint occurs during METAPHASE

Question 7

How many Checkpoints exist within the Cell Cycle?

Answer 7

4

Question 8

What does the G1 checkpoint Assess?

Answer 8

(1) . Cell Size
(2) . Nutrients
(3) . Growth Factors
(4) . DNA Damage

Question 9

What does the S checkpoint Assess?

Answer 9

(1) . Only 1 DNA Replication

(2) . DNA Damage

Question 10

What does the G2 checkpoint Assess?

Answer 10

(1) . Cell Size
(2) . DNA Replication
(3) . DNA Damage

Question 11

What does the Spindle Assembly checkpoint Assess?

Answer 11

(1) . Chromosome ATTACHMENT to Spindle.

(2) . Chromosome ALIGNMENT