PHOTOSYNTHESIS
C 4 PHOTOSYNTHESIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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two pyruvates
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two acetyl CoA
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two PGA
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two G3P
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Detailed explanation-1: -RuBisCO catalyzes a reaction between CO2 and RuBP, which forms a six-carbon compound that is immediately converted into two three-carbon compounds. This process is called carbon fixation, because CO2 is “fixed” from its inorganic form into organic molecules.
Detailed explanation-2: -Each turn of the cycle involves only one RuBP and one carbon dioxide and forms two molecules of 3-PGA.
Detailed explanation-3: -This reaction is catalyzed by the enzyme RuBP carboxylase/oxygenase, or rubisco. Reduction. In the second stage, ATP and NADPH are used to convert the 3-PGA molecules into molecules of a three-carbon sugar, glyceraldehyde-3-phosphate (G3P).
Detailed explanation-4: -PGA is a three-carbon compound, and… … two molecules of phosphoglycerate (PGA), a three-carbon acid.