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NEET UG BIOLOGY MCQ: NEURAL CONTROL AND COORDINATION
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Understanding
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Following are the steps of mechanism of vision in random order
I. Neural impulses are analysed and image formed on retina is recognised by visual cortex
II. Membrane permeability changes
III. Ganglion cells are excited
IV. Bipolar cells are depolarized
V. Action potential (impulse) is transmitted by optic nerves to visual cortex
VI. Potential differences are generated in the photoreceptor cells
VII. Light energy causes a change in shape of rhodopsin, leading to the dissociation of retinal (an aldehyde of vitamin-A) from opsin (a protein)
VIII. Structure of opsin is changed
Choose the correct sequence
I. Neural impulses are analysed and image formed on retina is recognised by visual cortex
II. Membrane permeability changes
III. Ganglion cells are excited
IV. Bipolar cells are depolarized
V. Action potential (impulse) is transmitted by optic nerves to visual cortex
VI. Potential differences are generated in the photoreceptor cells
VII. Light energy causes a change in shape of rhodopsin, leading to the dissociation of retinal (an aldehyde of vitamin-A) from opsin (a protein)
VIII. Structure of opsin is changed
Choose the correct sequence
View answer and explanation
Correct option: D
VII, VIII, II, VI, IV, III, V, I
Option D is correct as it represents the correct sequence of events in the mechanism of vision, starting from light interaction with rhodopsin to image recognition in the visual cortex.
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II. It is important in overall activation and arousal
III. It is concerned with involuntary movements
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