Which of the following releases 7.3 kcal energy when terminal phosphate is lost?
Correct answer: C. ATP
- A. NADP
- B. ADP
- C. ATP
- D. FAD
Explanation
ATP has three phosphate groups. Energy is stored in the bonds joining the phosphate groups. The covalent bond holding the third phosphate group carries about 7,300 calories of energy.
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About Bioenergetics
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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