First slide

Photorespiration

Question

Read the following statements (A-D) carefully.
A. Causes the 25% loss of CO2 fixed by Calvin-Benson cycle.
B. Operates in chloroplasts, leaf peroxisomes and mitochondria.
C. Absent in photosynthestic bacteria.
D. Does not produce ATP
Which light-dependent phenomenon has been described by the above statements?

Easy

A

Cyclic ETS
B

Photolysis of water
C

Photorespiration
D

Pentose phosphate pathway

Solution

During photorespiration 25% of CO₂ fixed during the dark reaction is lost. It takes place in chloroplast, mitochondria and peroxisomes. It is not seen in photosynthetic bacteria and it does not produce ATP.

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