Multiple Choice
Where is the energy stored in a molecule of ATP?
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7. Energy and Metabolism
ATP
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Which of the following is not a process that regenerates ATP?
A
Photophosphorylation
B
Glycolysis
C
Oxidative phosphorylation
D
Substrate-level phosphorylation
Verified step by step guidance1
Understand that ATP (adenosine triphosphate) is the primary energy carrier in cells, and it can be regenerated through various processes.
Identify the processes listed: Photophosphorylation, Glycolysis, Oxidative phosphorylation, and Substrate-level phosphorylation.
Recall that photophosphorylation occurs in the chloroplasts of plants during photosynthesis, where light energy is used to add a phosphate group to ADP, forming ATP.
Understand that oxidative phosphorylation occurs in the mitochondria during cellular respiration, where energy from electrons is used to add a phosphate group to ADP, forming ATP.
Recognize that substrate-level phosphorylation is a direct method of forming ATP by transferring a phosphate group from a substrate to ADP during glycolysis and the citric acid cycle. Glycolysis itself is a process that consumes ATP initially but also produces ATP through substrate-level phosphorylation, not directly regenerating ATP like the other processes.
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