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Biology
Neural Control and Coordination
61 questions from 34 papers, each with its answer.
- 61 questions
- 34 papers
- 1.73% of Biology
Sense organs – photoreceptors and visual pigments
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Good vision depends on adequate intake of carotene rich food. Select the best option from the following statements (a) Vitamin A derivatives are formed from carotene (b) The photopigments are embedded in the membrane discs of the inner segment (c) Retinal is a derivative of vitamin A (d) Retinal is a light absorbing part of all the visual photopigments
Statements (a), (c) and (d) are correct; pigments lie in the outer segment.
Carotene is the source of retinal, which is involved in the formation of rhodopsin in rod cells. Retinal, a derivative of vitamin A, is the light-absorbing part of all visual photopigments. Photopigments are in the membrane discs of the outer segment, so (b) is incorrect.
Transmission of impulses – chemical synapse
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Receptor sites for neurotransmitters are present on
Neurotransmitter receptors are on the post-synaptic membrane.
The pre-synaptic membrane is involved in the release of neurotransmitter at a chemical synapse. The receptor sites for neurotransmitters are present on the post-synaptic membrane.
Neuron – myelin sheath
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Myelin sheath is produced by
Schwann cells (PNS) and oligodendrocytes (CNS) form myelin.
Oligodendrocytes are neuroglial cells that produce the myelin sheath in the central nervous system, while Schwann cells produce the myelin sheath in the peripheral nervous system.
That is every question in Neural Control and Coordination for this filter.
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