PHOTOSYNTHESIS
C 4 PHOTOSYNTHESIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Detailed explanation-1: -PEP carboxylase, however, does not use oxygen as a substrate, and it has a greater affinity for carbon dioxide than Rubisco does. Thus, it has the ability to fix carbon dioxide in reduced carbon dioxide conditions, such as when the stomata on the leaves are only partially open.
Detailed explanation-2: -PEP carboxylase or PEPcase (phosphoenolpyruvate carboxylase) is an enzyme involved in the C4 and CAM pathways of photosynthesis. It catalyses the first step of carbon fixation in C4 and CAM plants.
Detailed explanation-3: -PEP carboxylase plays the key role of binding CO2 in the form of bicarbonate with PEP to create oxaloacetate in the mesophyll tissue.
Detailed explanation-4: -PEP fixes carbon dioxide into a four-carbon molecule, called malate, that is transported to the deeper bundle sheath cells that contain Rubisco.