The energy investment phase and energy pay-off phase are phases of which step in aerobic cellular respiration?Group of answer choicesElectron Transport ChainKreb's CycleFormation of Acetyl CoAGlycolysis
Question
The energy investment phase and energy pay-off phase are phases of which step in aerobic cellular respiration?Group of answer choicesElectron Transport ChainKreb's CycleFormation of Acetyl CoAGlycolysis
Solution
The energy investment phase and energy pay-off phase are phases of Glycolysis in aerobic cellular respiration.
Here's a step-by-step explanation:
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Glycolysis is the first step in the process of aerobic cellular respiration. It takes place in the cytoplasm of the cell.
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The energy investment phase is the first half of glycolysis. In this phase, 2 ATP molecules are used to phosphorylate glucose, which is then split into two 3-carbon molecules.
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The energy pay-off phase is the second half of glycolysis. In this phase, the 3-carbon molecules are oxidized, and 4 ATP molecules and 2 NADH molecules are produced.
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Therefore, the net gain from glycolysis is 2 ATP molecules and 2 NADH molecules, which will be used in the later steps of aerobic respiration.
So, the answer to your question is Glycolysis.
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