QUESTION 11 p53 __________ p21 which __________ progression through the cell cyc

Question

QUESTION 11

p53 __________ p21 which __________ progression through the cell cycle

a.stimulates, enhances

b.stimulates, inhibits

c.inhibits, enhances

d.inhibits, inhibits

QUESTION 10

If Wee1 were mutated so that it was inactive, while Cdc25 and CAK were both active, then

a.cells would never enter mitosis

b.cells would be smaller and enter mitosis prematurely

c.cells would be larger and enter mitosis prematurely

d.cells would be smaller and remain in interphase longer

e.cells would be larger and remain in interphase longer

QUESTION 9

The apoptosome is composed of

a.caspase 9, APAF-1, cytochrome C

b.caspase 3, APAF-1, cytochrome C

c.caspase 8, APAF-1, cytochrome C

d.caspase 9, caspase 3, cytochrome C

e.capsase 9, caspase 8, cytochrome C

QUESTION 8

In what phase of the cell cycle would you be MOST likely to find neurons?

a.G0

b.G1

c.S

d.G2

QUESTION 7

Which of the following is true in cancer?

a.p53 may be mutated

b.The cell continues to pass the checkpoints even if there are problems

c.Signal transduction pathways are highly regulated

d.Receptors need a ligand attached to be activated

e.Answers a and b

QUESTION 6

Which of the following is not in the correct order of cell cycle progression?

a.interphase, prophase, cytokinesis

b.G2, telophase, GI

c.GI, S, cytokinesis

d.cytokinesis, G1, S

e.mitosis, cytokinesis, G2

QUESTION 5

Which of the following statements are correct?

a.Cells in G1 enter S phase when cyclin levels decrease.

b.MPF activity decreases the level of mitotic cylin

c.Cells that enter M phase must progress to G1

d.MPF activity correlates with levels of mitotic cyclin

e.Mitotic cyclin is degraded by endosomes after being ubiquitinylated by MPF

Explanation / Answer

Ans-11 (d) ,Ans-10 (b), Ans- 8 (a), Ans-9 (a) , Ans-7 (e)

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