Multiple Choice
In which part of the cell does glycolysis occur?
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8. Respiration
Glycolysis
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What is the net gain of ATP molecules during glycolysis?
A
8 ATP molecules
B
4 ATP molecules
C
2 ATP molecules
D
6 ATP molecules
Verified step by step guidance1
Understand that glycolysis is the process of breaking down one molecule of glucose into two molecules of pyruvate, which occurs in the cytoplasm of the cell.
Recognize that during glycolysis, a total of 4 ATP molecules are produced through substrate-level phosphorylation.
Note that 2 ATP molecules are consumed in the initial steps of glycolysis to phosphorylate glucose and convert it into fructose-1,6-bisphosphate.
Calculate the net gain of ATP by subtracting the ATP consumed from the ATP produced: 4 ATP produced - 2 ATP consumed.
Conclude that the net gain of ATP molecules during glycolysis is 2 ATP molecules.
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