CELL RESPIRATION
OXIDATIVE PHOSPHORYLATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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less free energy
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more free energy
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the ability to transport electrons
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the ability to act as a final electron acceptor
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Detailed explanation-1: -Although oxidative phosphorylation is more complex, it produces more ATP than substrate-level phosphorylation. In addition, this process requires oxygen to occur (aerobic respiration).
Detailed explanation-2: -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.
Detailed explanation-3: -Oxidative phosphorylation, the process where electron transport from the energy precursors from the citric acid cycle (step 3) leads to the phosphorylation of ADP, producing ATP.
Detailed explanation-4: -Substrate-level phosphorylation occurs in the cytoplasm of cells (glycolysis) and in the mitochondria (Krebs cycle). It can occur under both aerobic and anaerobic conditions and provides a quicker, but less efficient source of ATP compared to oxidative phosphorylation.