Karin has trouble seeing at night.It is possible that she is suffering from a deficiency of ______.
A)opsin
B)vitamin A
C)vitamin D
D)photons

Question

Quizplus · Accepted Answer

The ability to see in low light conditions is dependent on the presence of a pigment called rhodopsin in the retina, which is made up of opsin and a molecule called retinal. Vitamin A is crucial for the production of retinal and a deficiency of this vitamin can lead to impaired night vision.

Karin Has Trouble Seeing at Night