PHYSIOLOGY
MUSCLE ENERGETICS GLYCOLYSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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substrate level phosphorylation
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oxidative phosphorylation
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Either A or B
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None of the above
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Detailed explanation-1: -Substrate-level phosphorylation is the production of ATP from ADP by a direct transfer of a high-energy phosphate group from a phosphorylated intermediate metabolic compound in an exergonic catabolic pathway.
Detailed explanation-2: -Substrate level phosphorylation is catalyzed by enzymes called phosphoglycerate kinase and pyruvate kinase.
Detailed explanation-3: -In general, the main energy source for cellular metabolism is glucose, which is catabolized in the three subsequent processes-glycolysis, tricarboxylic acid cycle (TCA or Krebs cycle), and finally oxidative phosphorylation-to produce ATP.
Detailed explanation-4: -Substrate-level phosphorylation refers to the formation of ATP from ADP and a phosphorylated intermediate, rather than from ADP and inorganic phosphate, Pi, as is done in oxidative phosphorylation. The amount of ATP that is generated by glycolysis is relatively low.