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Biology 1525 MCQs [All-Courses]

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Biology covers key concepts of life, organisms, and human systems with exam-focused notes for PPSC, FPSC, KPPSC, BPSC.,NTS, OTS, AJKPSC. Clear, concise topics help students prepare effectively for competitive tests.

All Topics  1525

Normal resting membrane potential of a neuron is_____________?
A – 50 mv
B – 60 mv
C – 70 mv
D – 80 mv
Correct Answer: – 70 mv
Insulin and glucagons are __________ in nature.
A Protein
B Amino acid derivative
C Polypeptide
D Steroid
Correct Answer: Protein
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
Correct Answer: Passive transport
MSH is produced from___________?
A Anterior pituitary
B Median pituitary
C Posterior pituitary
D None of these
Correct Answer: Median pituitary
Grave’s disease is produced due to____________?
A Undersecretion of thyroxin
B Overproduction of thyroxin
C Undersecretion of corticosteroids
D Overproduction of corticosteroids
Correct Answer: Overproduction of thyroxin
Cell membrane under resting conditions is impermeable to all the ions except_____________?
A Na+
B K+
C Cl-
D PO4-2
Correct Answer: K+
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.
Correct Answer: Active
Type of neurons found exclusively in CNS are_____________?
A Sensory neurons
B Motor neurons
C Associative neurons
D None of these
Correct Answer: Associative neurons
Secretin is a hormone produced by___________?
A Stomach
B Liver
C Pancreas
D Duodenum
Correct Answer: Duodenum
Which of the following statement about neuron is incorrect___________________?
A They not only conduct impulses but also generate them
B They are not the only cellular component of nervous system
C They may show limited regenerative capabilities
D Like all the living cell, when they mature and divide to form similar cells
Correct Answer: Like all the living cell, when they mature and divide to form similar cells
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