STANDARD Botany Dark Reaction MCQ Question
The first in dark reaction of photosynthesis is
Formation of ATP
Ionization of water
Fixation of CO₂ to a pentose sugar
The excitement of electron of chlorophyll by a photon of light
Correct Answer
Detailed Explanation
The first step in the Calvin cycle is the fixation of CO₂. The CO₂ molecule condenses with ribulose 1,5 bisphosphates to form an unstable six carbon compound which is rapidly hydrolyzed to two molecules of 3-phosphoglycerate.
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