How many ATP molecules are formed during substrate level phosphorylation in Krebs cycle when one glucose is consumed?
Question
How many ATP molecules are formed during substrate level phosphorylation in Krebs cycle when one glucose is consumed?
Solution
During the Krebs cycle, also known as the citric acid cycle, one glucose molecule is split into two pyruvate molecules before entering the cycle. Each pyruvate molecule goes through the Krebs cycle separately.
In each round of the Krebs cycle, one ATP molecule is produced through substrate-level phosphorylation.
Therefore, for one glucose molecule, which produces two rounds of the Krebs cycle, a total of 2 ATP molecules are produced during substrate-level phosphorylation.
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