11 Biology -21 Neural Control and Coordination: Online Test
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Developed by Dr. Abhijit Saha, Training Associate (Biology) ZIET Bhubaneswar
Chemicals which are released at the synaptic junction are called
Resting membrane potential is maintained by
None of the above
Which of the following is not involved in Knee- jerk reflex?
An area in the brain which is associated with strong emotions is
The part of internal ear responsible for hearing is
In humans, hindbrain comprises three parts. One of them is
The nerve centres which control the body temperature and the urge for eating are contained in
Alzheimer disease in humans is associated with the deficiency of
gamma amino butyric acid (GABA)
Cornea transplant in humans is never rejected. This is because
its cells are least penetrable by bacteria
it has no blood supply
it is composed of enucleated cells
it is a non- living layer
Which of the following does not act as a neurotransmitter?
During synaptic excitation
the membrane potential of the post- synaptic cell hyperpolarises
the impulse are all or none in nature
the impulse can summate
after an impulse, the post-synaptic cell passes through a refractory period
Four healthy persons in their twenties got involved in injuries resulting in damage and death of the cells of the following. Which of the following cells are least likely to be replaced by new cells?
Malpighian layers of skin
The chemical used by doctors to dilate pupil for examination is
Acetylcholine helps in
all of these
If an organism has more rods in its eyes, it will
be active during day
be active during night
possess colour vision
not possess colour vision
Colour perception in man is due to
rhodopsin pigment in rod cells
rhodopsin pigment in cone cells
iodopsin pigment in cone cells
iodopsin pigment in rod cells
Organ of Corti helps in
formation of wax
maintaining body equilibrium
all of these
Bipolar neurons occur in
retina of eye
brain and spinal cord
Eustachian canal connects
middle ear with external ear
middle ear with internal ear
middle ear with pharynx
external ear with internal ear
Which part of the retina consists only of cones?
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