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


7.
During which stage of mitosis do sister chromatids separate?
A.
Prophase
B.
Metaphase
C.
Anaphase
D.
Telophase
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ANSWER :
C. Anaphase
8.
Crossing over occurs during which substage of meiosis?
A.
Leptotene
B.
Zygotene
C.
Pachytene
D.
Diplotene
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ANSWER :
C. Pachytene
9.

The phase of meiosis where synapsis and crossing over occur is:

NEET - 2017

A.

Prophase II

B.

Prophase I

C.

Metaphase I

D.

Anaphase I

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ANSWER :

B. Prophase I

10.

The S phase of the cell cycle is important because

A.

DNA is replicated

B.

RNA is synthesized

C.

Proteins are degraded

D.

Cell growth stops

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ANSWER :

A. DNA is replicated

11.
Which of the following is true for mitosis but not for meiosis?
A.
Homologous chromosomes pair
B.
Genetic variation is introduced
C.
Two identical daughter cells are produced
D.
Crossing over occurs
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ANSWER :
C. Two identical daughter cells are produced
12.
What is the role of cyclins in the cell cycle?
A.
Inhibit DNA replication
B.
Regulate cell cycle progression
C.
Destroy damaged cells
D.
Form the mitotic spindle
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ANSWER :
B. Regulate cell cycle progression