Question

Which of the following statement is/are correct for photorespiration?

• A. Glycerate diffuses out of peroxisome and enters chloroplast, here it is phosphorylated
• B. Glyoxylate is used in the synthesis of glycine in peroxisome
• C. In mitochondria when glycine is converted into serin at that time glycine first oxidized and later reduced
• D. Coordinated of chloroplast, peroxisome and mitochondrion is essential in photorespiration

Answer 1

The correct option is A Glycerate diffuses out of peroxisome and enters chloroplast, here it is phosphorylated

During photorespiration, after a series of reaction, synthesis of serine takes place in mitochondria. This serine is taken up by peroxisome and is converted into glycerate. The glycerate then moves from peroxisome to chloroplast, where phosphorylation takes place and it is converted into PGA.

So the correct option is 'Glycerate diffuses out of peroxisome and enters chloroplast, here it is phosphorylated'