What structural feature is most responsible for chlorophyll's ability to absorb light?
A)The magnesium ion.
B)The conjugated double-bonds in the tetrapyrrole ring.
C)The phytol side chain.
D)An aromatic side chain attached to the tetrapyrrole ring.

Question

Quizplus · Accepted Answer

The conjugated double-bonds in the tetrapyrrole ring are the structural feature that is responsible for chlorophyll's ability to absorb light. These double-bonds create a system of alternating single and double bonds, which allows for the absorption of light in the visible spectrum. The other structural features listed (the magnesium ion, the phytol side chain, and the aromatic side chain) do not directly contribute to chlorophyll's ability to absorb light.

What Structural Feature Is Most Responsible for Chlorophyll's Ability to Absorb