Which enzyme turns pyruvate back into PEP in C4 mesophyll?
ANADP-dependent malic enzyme
BMalate dehydrogenase (NADP)
CPhosphoenolpyruvate carboxylase
DPyruvate phosphate dikinase
Answer & Solution
Correct answer: D. Pyruvate phosphate dikinase
Pyruvate phosphate dikinase uses ATP and phosphate to turn pyruvate back into PEP.
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