MUSCLE PHYSIOLOGY

PHYSIOLOGY

MUSCLE ENERGETICS GLYCOLYSIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which stage of aerobic respiration requires ATP?
A
Krebs Cycle
B
Pyruvate
C
Glycolysis
D
Hexokinase
Explanation: 

Detailed explanation-1: -ATP is required in the first half of glycolysis, when glucose is converted to glucose-6-phosphate by the enzyme hexokinase and when fructose-6-phosphate is converted to fructose 1, 6-bisphosphate by the enzyme phosphofructokinase.

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: -Citric Acid Cycle In this stage of Aerobic respiration, the oxaloacetate combines with the acetyl-coenzyme A and produces citric acid. The citric acid cycle undergoes a series of reactions and produces 2 molecules of carbon dioxide, 1 molecule of ATP, and reduced forms of NADH and FADH.

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