Assertion :Conversion of 1, 3-biphosphoglycerate (BPGA) to 3-phosphoglyceric acid (PGA) is an energy-yielding step. Reason: This energy is trapped in the form of ATP.
A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Both Assertion and Reason are incorrect
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Solution
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion One of the two phosphates of 1, 3-biphosphoglycerate (BPGA) is linked by high energy bond. It can synthesize ATP and form 3-phosphoglycerate by phosphoglycerate kinase enzyme. The direct synthesis of ATP from metabolites is called substrate-level phosphorylation.