Question

For the synthesis of rhodopsin, which of the following foods is needed?
A. Mango
B. Rice
C. Carrot
D. Tomatoes

Answer 1

Hint: Rhodopsin is a protein that is important for vision, especially in dim or low light. The photoreceptors present in the retina that contain rhodopsin are called rods. With the help of rods cell we are able to see at night.

Complete answer:
Opsins are the light sensitive proteins of rods and binding of opsin to
retinal makes up rhodopsin that serves as the visual purple pigment of rod cells. Retinol is a
form of vitamin A.
Option A- Mango- Mango is a weight losing food as it is a fibrous fruit and has more amount of
water content in it.
Option B- Rice- Rice contains vitamin E and vitamin B and also contains potassium. It is great food
source. It has more arsenic content than other food so it can be bad for health in excessive
amount.
Option C- Carrot- It is rich in vitamin A and retinol is a form of vitamin A that helps in synthesis
of rhodopsin. So deficiency of vitamin A causes night blindness.
Option D- Tomatoes- It has a large content of antioxidant lycopene that has good effects on
health and reduce risk of heart disease and cancer.

So the correct answer is Option C- Carrot.

Note: Rhodopsin is a specialized light receptor cell that is known as rods. These parts of light sensitivity are called retina and help to see in low light. There is also other light receptor cell
present in the retina known as cone cells that helps to see in bright light.