Which one of the following represents dephosphorylation?
Correct answer: B. Fructose 1,3-bisphosphoglycerate → 3-phosphoglycerate
- A. Fructose 1-phosphate → Fructose 1,6-bisphosphate
- B. Fructose 1,3-bisphosphoglycerate → 3-phosphoglycerate
- C. Fructose 1-phosphate → Fructose 6-phosphate
- D. Glucose 6-phosphate → Fructose 1-phosphate
Explanation
Dephosphorylation is the process of removing a phosphate group from a molecule. In the conversion of fructose 1,3-bisphosphoglycerate into 3-phosphoglycerate, one phosphate group is removed, making this a dephosphorylation reaction. Option A involves adding a phosphate group, Option C involves isomerization, and Option D involves isomerization without phosphate removal; thus, none of these represent dephosphorylation.
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Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.
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