181.
The correct sequence of phases of cell cycle is:
A
$$M \to {G_1} \to {G_2} \to S$$
B
$${G_1} \to {G_2} \to S \to M$$
C
$$S \to {G_1} \to {G_2} \to M$$
D
$${G_1} \to S \to {G_2} \to M$$
Answer :
$${G_1} \to S \to {G_2} \to M$$
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182.
During cell division, spindle fibers attach to which part of chromosome
A
Primary constriction
B
Sec. Constriction
C
Chromomere
D
Chromatid
Answer :
Primary constriction
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183.
In " singer and Nicolson" model of plasma membrane, the extrinsic proteins are
A
Tightly associated with intrinsic protein and can be easily separated
B
Loosely associated with intrinsic protein
C
Loosely associated with intrinsic protein and can be easily separated
D
Loosely associated with intrinsic protein and can't be easily separated
Answer :
Loosely associated with intrinsic protein and can't be easily separated
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184.
What happens during growth of a cell
A
K. I. decreases
B
K. I. increases
C
KI. fluctuates
D
K. I. remains constant
Answer :
K. I. decreases
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185.
Which stage of cell cycle is characterised by DNA replication, synthesis of Histone and formation of new nucleosomes
A
S-phase
B
G1-pahse
C
G2-pahse
D
M-pahse
Answer :
S-phase
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186.
Which of the following has a single membrane
A
Ribosome
B
Peroxisome
C
Nucleus
D
Cetnrosome
Answer :
Peroxisome
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187.
In which mitosis does not-occur
A
Green algae
B
Fungi
C
Bacteria
D
Higher plants
Answer :
Bacteria
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188.
Four daughter cells formed after meiosis are
A
Genetically similar
B
Genetically different
C
Anucleate
D
Multinucleate
Answer :
Genetically different
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189.
A chromosome having sub- terminal centromere is called
A
Telocentric
B
Acrocentic
C
Metacentric
D
Sub - metacentric
Answer :
Acrocentic
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190.
Mitosis is not found in
A
Cartilage cells
B
Bone cells
C
Nerve cells
D
All of the above
Answer :
Nerve cells
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