Multiple choice

Name the pigment present in human rods, which can absorb a wide range of electromagnetic frequencies.

  1. Melanin

  2. Rhodopsin

  3. Carotenoids

  4. Zeaxanthin

  5. Lutein
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Rhodopsin, also known as visual purple, is a biological pigment in photoreceptor cells of the retina that is responsible for the first events in the perception of light. Rod cells detect the degree of lightness entering the eye, and their sensitivity is dependent on the amount of rhodopsin present. This pigment is sensitive to red light in the retinal rods of the eyes consisting of opsin and retinene.

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