B Cell Division (Cell Cycle, Mitosis, Meiosis and Their Significance ) NEET Questions

Biology - Cell Structure and Function

B Cell Division (Cell Cycle, Mitosis, Meiosis and Their Significance ) MCQ Questions


13.
DNA content during G1 phase is:
A.
2C
B.
4C
C.
C
D.
Variable
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ANSWER :
A. 2C
14.
Quiescent stage (G0) is characterised by:
A.
Apoptosis
B.
Mitotic activity
C.
Active DNA replication
D.
Cells that do not divide and remain metabolically active
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ANSWER :
D. Cells that do not divide and remain metabolically active
15.
In a typical human cell cycle of 24 hours, how long does S phase last?
A.
4 hours
B.
11 hours
C.
8 hours
D.
1 hour
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ANSWER :
C. 8 hours
16.
Centrioles begin to duplicate in which phase?
A.
M
B.
S
C.
G2
D.
G1
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ANSWER :
B. S
17.
The first scientist to suggest that cells divide at regular intervals was:
A.
Watson and Crick
B.
Howard and Pelc
C.
Walter Flemming
D.
Schleiden
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ANSWER :
B. Howard and Pelc
18.
In the cell cycle, the order of phases is:
A.
M → G1 → S → G2
B.
G2 → S → G1 → M
C.
S → G1 → G2 → M
D.
G1 → S → G2 → M
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ANSWER :
D. G1 → S → G2 → M