The Carotenoid Pigments of Some Phototrophs Interact with ________ to Reduce

Question

The carotenoid pigments of some phototrophs interact with ________ to reduce its toxicity.
A) singlet oxygen (¹O₂)
B) hydroxyl radical (HO⁻)
C) peroxide anion (O₂²⁻)
D) superoxide radical (O₂⁻)
E) molecular oxygen (O₂)

Accepted Answer

The carotenoid pigments of some phototrophs interact with singlet oxygen (¹O₂) to reduce its toxicity by quenching it and converting it to a ground state. This helps prevent oxidative damage to cells and tissues.