Photosynthesis in Higher PlantsHard

Question

During photorespiration, the oxygen consuming (s) occur in

Options

A.stroma of chloroplasts and peroxisomes
B.granaof chloroplasts and peroxisomes
C.stroma of chloroplasts
D.stroma of chloroplasts and peroxisomes and mitochondria

Solution

The first reaction of photorespiration occurs in stroma of chloroplast. In this reaction the RuBP (Ribulose 1-5 Biphosphate) consumes one oxygen molecule in presence of enzyme Rubisco.
In peroxisome the glycolate transferred from chloroplast takes up O2 and formed the glyoxylate whereas the H2O2 release as byproduct.

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