NEET 2020 Botany Photorespiration MCQ Question
The oxygenation activity of RuBisCo enzyme in photorespiration leads to the formation of:
1 molecule of⁶⁻C compound
1 molecule of⁴⁻C compound and 1 molecule of²⁻C compound
2 molecules of³⁻C compound
1 molecule of³⁻C compound
Correct Answer
Detailed Explanation
During photorespiration, RuBisCO catalyzes the oxygenation of RuBP (a 5-C compound), producing one molecule of 3-phosphoglycerate (3-C) and one molecule of phosphoglycolate (2-C). The NTA official key selects D (1 molecule of 3-C compound), reflecting that the net useful product is one 3-PGA molecule. The correct answer is D.
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