1
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Good vishion depends on adequate intake of carotene rich food.

Select the best option from the following statements.
(1)  Vitamins A derivatives are formed from carotene,
(2)  The photopigments are embedded in the membrane discs of the inner segment.
(3)  Retinal is a derivative of vitamin A.
(4)  Retinal is a light absorbing part of all the visual photopigments.
A
(1), (3) and (4)
B
(1) and (3)
C
(2), (3) and (4)
D
(1) and (2)
2
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Choose the correct statement.
A
Nociceptors respond to changes in pressure.
B
Meissner's corpuscles are thermoreceptors.
C
Photoreceptors in the human eye are depolarised during darkness and become hyperpolaized in response to the light stimulus.
D
Receptors do not produce graded potentials.
3
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
Photosensitive compound in human eye is made up of
A
opsin and retinol
B
transducin and retinene
C
guanosine and retinol
D
opsin and retinal.
4
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
Destruction of the anterior horn cells of the spinal cord would result in loss of
A
commissural impulses
B
integrating impulses
C
sensory impulses
D
voluntary motor impulses.
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