Photorespiration reaction catalyzed by RuBisCo is shown below :
RuBP $+$ O $_{2}$ $\to$ 3-Phosphoglycerate $+$ X
Identify “X” from the given options :NEET 2026 (Re-NEET)

Question

Photorespiration reaction catalyzed by RuBisCo is shown below : RuBP + O 2 ​ → 3-Phosphoglycerate + X Identify “X” from the given options :NEET 2026 (Re-NEET)

TestHub · Accepted Answer

In photorespiration, the enzyme RuBisCo acts as an oxygenase.

It catalyzes the oxygenation of Ribulose-1,5-bisphosphate (RuBP) to form one molecule of a 3-carbon compound, 3-phosphoglycerate, and one molecule of a 2-carbon compound, 2-phosphoglycolate.

The reaction is:
RuBP $+$ O $_{2}$ $\to$ 3-Phosphoglycerate $+$ 2-Phosphoglycolate

Thus, the product X is 2-Phosphoglycolate.

Answer: 2-Phosphoglycolate

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