First slide

Photorespiration

Question

The correct sequence of cell organelles involved in photorespiration is

Easy

A

chloroplast, mitochondria, and peroxisomes.
B

peroxisomes, chloroplast, and mitochondria.
C

chloroplast, peroxisome and mitochondria.
D

chloroplast, vacuole, and peroxisome.

Solution

The sequence of organelles involved in photorespiration are chloroplast, peroxisomes and mitochondria. The addition of a molecule of oxygen occurs in the chloroplast and RuBP is converted into one molecule of 3-PGA and one molecule of phosphoglycolate. The phosphoglycolate is subsequently metabolized in a series of reactions in the peroxisome and the mitochondrion that result in the release of a molecule of CO₂ and recovery of the remaining carbon by the PCR cycle.

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