10. In order to be active, a Cdc-cyclin needs to be A) singly phosphorylated B)
ID: 278903 • Letter: 1
Question
10. In order to be active, a Cdc-cyclin needs to be
A) singly phosphorylated
B) cleaved by proteases
C) doubly methylated
D) doubly phosphorylated
E) acetylated
11. During the G2 checkpoint the cell is assessed with regard to
A) DNA replication
B) DNA Damage
C) nutrients
D) presence of growth factors
E) chromosome attachment to spindle
12. In a population of 1000 cells, 200 are in various phase of the M stage. For those in interphase, 400 have 1X amount of DNA, 200 have 2X amount of DNA, and the rest have somewhere in between 1X and 2X amount of DNA. What is the mitotic index?
A) 20%
B) 10%
C) 1%
D)40%
E) 2%
13. In a population of 1000 cells, 200 are in various phase of the M stage. For those in interphase, 400 have 1X amount of DNA, 200 have 2X amount of DNA, and the rest have somewhere in between 1X and 2X amount of DNA. What is the total length of the cell cycle if the S phase has a duration of 5 hours?
A) 12.5 Hrs
B) 10 Hrs
C) 25 Hrs
D) 20Hrs.
Explanation / Answer
Ans 10 : A) singly phosphorylated
As the name suggests cdc refers to cell division cycle.
It controls the different steps of the cell cycle starting from its entry to different phases also including the mitotic phase and the synthetic phase.
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