IMMUNOGLOBULINS
CLASSICAL ALTERNATE AND LECTIN PATHWAYS
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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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Either A or B
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None of the above
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Detailed explanation-1: -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-2: -Phosphoenolpyruvate (PEP) is the 3-Carbon compound and acts as the primary CO2 acceptor in the mesophyll cells of C4 plants, leading to the formation of OAA (Oxaloacetic acid), C4 acid. The enzyme PEP carboxylase or PEPcase catalyses this reaction.
Detailed explanation-3: -Carbon dioxide diffuses into leaves during the night (when stomata are open) and is fixed into oxaloacetate by PEP carboxylase, which attaches the carbon dioxide to the three-carbon molecule PEP. The oxaloacetate is converted to another organic acid, such as malate.