Question

How many ATP, NADH, and FADH2 are produced and each step of cellular respiration?

Answer 1

Cellular respiration uses energy in glucose to make ATP. Aerobic (“oxygen-using”) respiration occurs in three stages: glycolysis, the Krebs cycle, and electron transport. In glycolysis, glucose is split into two molecules of pyruvate.The net energy gain from one cycle is 3 NADH, 1 FADH2, Page 4 Cellular respiration 4 and 1 GTP; the GTP may subsequently be used to produce ATP. Thus, the total energy yield from one whole glucose molecule (2 pyruvate molecules) is 6 NADH, 2 FADH2, and 2 ATP.

 

Cellular respiration