Good vision depends upon adequate intake of carotene rich food. Which of the following statements are true regarding Vitamin A.

Vitamin A derivatives are formed from carotene.

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Retinol is a derivative of Vitamin A.

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Retinol is a light absorbing part of all the visual photopigments.

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The photopigments are embedded in the membrane discs of the inner segments.

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Solution

The correct option is C
Retinol is a light absorbing part of all the visual photopigments.

The correct options are A, B, and C.
Explanation for correct options:
Within the body, beta-carotene is converted into vitamin A or Retinol.
Retinol is known to be the aldehyde of vitamin A.
It is a polyene chromophore.
Retinol is used in the synthesis of rhodopsin.
Rhodopsin is a photopigment present in rod cells.
Retinol is the basis of chemical phototransduction.
Explanation for incorrect option:
Option D:
The photopigments are embedded in the membrane discs of the inner segments of retina.
Final answer: Vitamin A is formed from beta-carotene, retinal is an aldehyde of vitamin A and retinol is used in synthesis of photopigment rhodopsin all are the statements are true regarding Vitamin A.

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Similar questions

Q. 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.

Q. Good vision depends on adequate intake of carotene-rich food. Select the best option from the following statements.

I. Vitamin A derivatives are formed from carotene
II. The photopigments are embedded in the membrane discs of the inner segment
III. Retinal is a derivative of vitamin A
IV. Retinal is a light-absorbing part of all the visual photopigments

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