Question

Name the G- protein, which takes part in vision?

(a) Ethylene

(b) Adenosine

(c) Acetylcholine

(d) Transducin

This question was posed to me in an interview for internship.

I'd like to ask this question from Sensory Organs topic in section Human Physiology of Life Sciences

Answer 1

Right answer is (d) Transducin

The explanation is: Rhodopsin activates molecules of transducin which further activates an enzyme to break down cyclic GMP. The drop in cyclic GMP will open sodium channel which is responsible for vision.