Question

Assertion :Conversion of 1,3 biphosphoglycerate (BPGA) to 3-phospho-glyceric acid (PGA) is an energy yielding step.

Reason : energy is trapped in the form of ATP.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is not correct explanation of A

(c) A is true but R is false

(d) A and R are false

Answer 1

Correct option   (b) Both A and R are correct and R is not the correct explanation of A.

Explanation:

one of the two  phosphates of 1,3 biphosphoglycerate (BPGA) is linked by high energy bond. It can synthesis ATP and form 3-phosphoglycerate by phosphoglycerate kinase enzyme. The direct synthesis of ATP from metabolites is called substrate level phosphorylation.