Aerobic Respiration Became Established as a Result of the Evolution

Question

Aerobic respiration became established as a result of the evolution of ____.  
A) the first protocells
B) the first true cells
C) metabolism
D) the nuclear envelope
E) the oxygen-producing pathway of photosynthesis

Accepted Answer

Aerobic respiration requires oxygen as a final electron acceptor, which is produced by the oxygen-producing pathway of photosynthesis. Therefore, the evolution of this pathway led to the establishment of aerobic respiration.