Question

of which wavelength of light do carotenoids absorb the greatest percentage?
a) 400nm
b) 500nm
c) 600nm
d) 700nm

Explanation:

Carotenoids are pigments that absorb light in the blue - violet and blue regions of the visible spectrum. The visible spectrum ranges approximately from 400nm (violet) to 700nm (red). Among the given options, 400nm is in the violet region where carotenoids have significant absorption.

Answer:

A) 400nm