Which of the following are responsible for the detection of changes in environment?
A. Receptors
B. Neurons
C. Effectors
D. All of these
Biology Mcqs
Maximum speed of nerve impulse transmission is____________?
Maximum speed of nerve impulse transmission is____________?
A. 100 m/sec
B. 110 m/sec
C. 120m/sec
D. 130 m/sec.
Which of the following has no central nervous system?
Which of the following has no central nervous system?
A. Hydra
B. Man
C. Planaria
D. Cockroach
Na+ -K+ ATPase pump is important for_______________?
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
Number of pairs of cranial nerves is__________?
Number of pairs of cranial nerves is__________?
A. 10
B. 11
C. 12
D. 13
Normal action potential of a neuronal cell is ___________?
Normal action potential of a neuronal cell is ___________?
A. plus 50 mv
B. plus 60 mv
C. plus 70 mv
D. plus 80 mv
Insufficient secretion of iodothyroxine in adults causes____________?
Insufficient secretion of iodothyroxine in adults causes____________?
A. Myxedema
B. Cretinism
C. Goiter
D. Exopthalmic goiter
Normal resting membrane potential of a neuron is_____________?
Normal resting membrane potential of a neuron is_____________?
A. – 50 mv
B. – 60 mv
C. – 70 mv
D. – 80 mv
Insulin and glucagons are __________ in nature.
Insulin and glucagons are __________ in nature.
A. Protein
B. Amino acid derivative
C. Polypeptide
D. Steroid
Acromegaly is caused due to oversecretion of____________?
Acromegaly is caused due to oversecretion of____________?
A. STH
B. TSH
C. ACTH
D. Thyroxin