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Question

The total number of substrate level phosphorylation reactions that occur during conversion of 1 glucose into two pyruvic acids is

A
2
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B
4
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C
1
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D
8
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Solution

The correct option is B 4
During glycolysis, there are two steps at which substrate level phosphorylation occur when glyceraldehyde-3-phosphate is converted into pyruvic acid. Therefore, in the glycolysis of one glucose molecule, number of substrate level phosphorylation occurs 4 times.

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