MUSCLE PHYSIOLOGY

PHYSIOLOGY

MUSCLE ENERGETICS ATP AND CP

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Aerobic glycolysis is the most efficient energy system in generating ATP for muscle activity. The net gain of ATP molecules produced due to the breakdown of glycogen is:
A
26-28
B
34-36
C
36-38
D
46-48
Explanation: 

Detailed explanation-1: -This process occurs through the breakdown of one molecule of glucose. Here the ATP molecules first form in the cytoplasm through glycolysis and then it is moved to the inner mitochondrial membranes where it produces 36 ATP molecules. Thus, the total ATP molecules produced are 38.

Detailed explanation-2: -Glycolysis occurs in both aerobic and anaerobic states. In aerobic conditions, pyruvate enters the citric acid cycle and undergoes oxidative phosphorylation leading to the net production of 32 ATP molecules.

Detailed explanation-3: -Electron transport from the molecules of NADH and FADH2 made from glycolysis, the transformation of pyruvate, and the Krebs cycle creates as many as 32 more ATP molecules. Therefore, a total of up to 36 molecules of ATP can be made from just one molecule of glucose in the process of cellular respiration.

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