The main difference between photosynthesis and respiratory electron transport is (are)
A)the tetrapyrole ring of the pigments involved.
B)the coenzymes that carry electrons.
C)the sources of excited electrons.
D)the formation of ATP.

Question

Quizplus · Accepted Answer

The main difference between photosynthesis and respiratory electron transport lies in the sources of excited electrons. In photosynthesis, the excited electrons come from water molecules that are split, while in cellular respiration, electrons are donated by food molecules as they are broken down.

The Main Difference Between Photosynthesis and Respiratory Electron Transport Is