Respuesta :
oxidative phosphorylation is the answer that fits the bill. Hence the correct option is D; The most ATP molecules are produced during oxidative phosphorylation because oxygen is used as the final electron acceptor, which results in the reduction of ATP to water.
An electrochemical gradient of 34 ATP molecules is created when electrons flow through a chain of cytochromes.
Because the citric acid cycle involves the cyclic passage of electrons via other intermediates including succinate, fumarate, and other compounds before returning to acetyl CoA, option an is wrong.
Because glycolysis only releases two ATP molecules along with pyruvate, option b is wrong. Four molecules of ATP are produced in total, but two molecules are used up in the process, leaving a net yield of just two molecules.
Because the bigger polymer of glucose is broken down into smaller monosaccharide units that are required in biological operations to create energy, option c—digesting starch to glucose—is wrong because digestion of starch needs ATP.
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Full Question :
Which of the following stages in the breakdown of the piece of toast you had for breakfast generates the most ATP?
a. the citric acid cycle
b. glycolysis
c. the digestion of starch to glucose
d. oxidative phosphorylation
