The two photosystems of light reactions are designated
A) type 1 and type 2.
B) type I and type II.
C) photosystem A and photosystem B.
D) photosystem 680 and photosystem 700.
E) photosystem I and photosystem II.

Question

Quizplus · Accepted Answer

The two photosystems of light reactions are commonly designated as photosystem I and photosystem II, with photosystem II being the first to be discovered and thus having the lower number (680) and photosystem I being discovered second and having the higher number (700).

The Two Photosystems of Light Reactions Are Designated