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

Answer 2

There are 36 ATP, 10 NADH, and 2 FADH2 are produced in the process of cellular respiration.

In the glycolysis, glucose is broken down into 2 ATP molecules, 2 pyruvate and 2 NADH that turns into 4 ATP molecules. 2 pyruvate molecules are converted into 2 ATP molecules. In Kreb's cycle, 2 ATP, 6 NADH, and 2 FADH2 are produced. 6 NADH are converted into 18 ATP molecules and 2 FADH2 molecules are converted into 4 ATP molecules so the total 36 ATP molecules are formed in the end of cellular respiration.

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