GK
VITAMINS MINERALS COENZYMES AND DEFICIENCY DISEASES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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vitamin A
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vitamin B
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vitamin C
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vitamin D
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Detailed explanation-1: -Vitamin A is critical for vision because it is needed by the retina of eye. Retinol can be convert to retinal, and retinal is a chemical necessary for rhodopsin. As light enters the eye, the 11-cis-retinal is isomerized to the all-"trans” form.
Detailed explanation-2: -Retinal is the vitamin A derivative that is most toxic, due to its chemical reactivity. Even when vitamin A is used only for light sensing, retinal can be toxic [119] due to its chemical toxicity in randomly modifying proteins through Schiff base formation.
Detailed explanation-3: -helping your body’s natural defence against illness and infection (the immune system) work properly. helping vision in dim light. keeping skin and the lining of some parts of the body, such as the nose, healthy.