First product of photorespiration is
A. Phosphoglycolate
B. Glycolate
C. Glycine
D. None of these
Answer: Option A
Solution(By Examveda Team)
The first product of photorespiration is Phosphoglycolate.Photorespiration refers to a process in plant metabolism where the enzyme RuBisCO oxygenates RuBP, wasting some of the energy produced by photosynthesis.
Addition of molecular oxygen to ribulose-1,5-bisphosphate produces 3-phosphoglycerate (PGA) and 2-phosphoglycolate (2PG, or PG). PGA is the normal product of carboxylation and productively enters the Calvin cycle.
Phosphoglycolate, however, inhibits certain enzymes involved in photosynthetic carbon fixation.
Related Questions on Plant Pathology
Which photosynthetic bacteria possess both PS I and PS II?
A. Purple sulphur bacteria
B. Cyanobacteria
C. Purple nonsulphur bacteria
D. Green sulphur bacteria
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