A Specialized Pair of Chlorophylls Exists At

Question

A specialized pair of chlorophylls exists at
A) the antenna complexes.
B) the accessory pigments.
C) the reaction centers.
D) the stroma.
E) the bottom of the roots in most plants

Accepted Answer

The specialized pair of chlorophylls exists at the reaction centers, where they are responsible for transferring excited electrons to electron acceptors in the photosynthetic electron transport chain. The antenna complexes contain other pigments that absorb light and transfer the energy to the reaction centers, but do not contain this specific pair of chlorophylls. The accessory pigments also absorb light, but are not directly involved in the electron transport chain. The stroma is the fluid-filled space inside chloroplasts, where other metabolic reactions occur, but does not contain this specialized pair of chlorophylls. The bottom of the roots in most plants is not involved in photosynthesis at all.