Neural Control and Coordination


  1. Alzheimer disease in humans is associated with the deficiency of:









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    Alzheimer disease in humans is associated with the deficiency of acetylcholine. Acetylcholine is the neurotransmitter produced by neurons referred to as cholinergic neurons. Acetylcholine plays a role in skeletal muscle movement, as well as in the regulation of smooth muscle and cardiac muscle. Acetylcholine is synthesized from choline and acetyl coenzyme-A through the action of the enzyme choline acetyltransferase and becomes packaged into membrane-bound vesicles.

    Correct Option: B

    Alzheimer disease in humans is associated with the deficiency of acetylcholine. Acetylcholine is the neurotransmitter produced by neurons referred to as cholinergic neurons. Acetylcholine plays a role in skeletal muscle movement, as well as in the regulation of smooth muscle and cardiac muscle. Acetylcholine is synthesized from choline and acetyl coenzyme-A through the action of the enzyme choline acetyltransferase and becomes packaged into membrane-bound vesicles.


  1. The purplish red pigment rhodopsin contained in the rods type of photoreceptor cells of the human eye, is a derivative of:









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    Rhodopsin contained in the rod type of photoreceptor cells of human eye is a derivative of vitamin B1.

    Correct Option: A

    Rhodopsin contained in the rod type of photoreceptor cells of human eye is a derivative of vitamin B1.



  1. Acute vision is present in









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    Vulture, some other birds and man have acute vision.

    Correct Option: A

    Vulture, some other birds and man have acute vision.


  1. Which one of the following statements is not correct?









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    Retinal is a derivative of vitamin A. Retinal is a polyene chromophore, and bound to proteins called opsins, is the chemical basis of animal vision. Bound to proteins called type 1 rhodopsins, retinal allows certain microorganisms to convert light into metabolic energy.

    Correct Option: C

    Retinal is a derivative of vitamin A. Retinal is a polyene chromophore, and bound to proteins called opsins, is the chemical basis of animal vision. Bound to proteins called type 1 rhodopsins, retinal allows certain microorganisms to convert light into metabolic energy.



  1. A gymnast is able to balance his body upside down even in the total darkness because of:









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    Vestibular apparatus has specific receptors called crista and macula to maintain the balance and posture of body.

    Correct Option: A

    Vestibular apparatus has specific receptors called crista and macula to maintain the balance and posture of body.