Biology MCQs

1496 MCQs  — Everyday Science MCQs  (Page 68 of 150)

Attempt Biology Quiz
Type of neurons found exclusively in CNS are_____________?
A. Sensory neurons
B. Motor neurons
C. Associative neurons
D. None of these
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Maintenance of normal resting potential via movement of K+ inside the cell and na+ out is a/an ___________ process?
A. Active
B. Passive
C. Diffusional
D. None of these.
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Cell membrane under resting conditions is impermeable to all the ions except_____________?
A. Na+
B. K+
C. Cl-
D. Po4-2
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At the induction of action potential opening of Na+ gate with influx of Na+ is a ___________ processes?
A. Active transport
B. Passive transport
C. Diffusion
D. None of these
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Normal resting membrane potential of a neuron is_____________?
A. – 50 mv
B. – 60 mv
C. – 70 mv
D. – 80 mv
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Normal action potential of a neuronal cell is ___________?
A. Plus 50 mv
B. Plus 60 mv
C. Plus 70 mv
D. Plus 80 mv
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Na+ -K+ ATPase pump is important for_______________?
A. Maintenance of resting potential
B. Massive out flux of k+ after depolarization
C. Recovery of resting potential
D. Conversion of resting potential into action potential
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Maximum speed of nerve impulse transmission is____________?
A. 100 m/sec
B. 110 m/sec
C. 120m/sec
D. 130 m/sec.
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Co-ordination results in_____________?
A. Regulation of body functions
B. Organization of body functions
C. Integration of body functions
D. All of these
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Which of the followings are effectors______________?
A. Muscles
B. Glands
C. Sensory organs
D. Both ‘a’ & ‘b’
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Word of the Day
14 Jul
Obscenity
the state or quality of being obscene.
بےہودگی، فحاشی، بے شرمی

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