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Question

In Krebs cycle, malate hands over hydrogen to


A
NAD+
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B
FAD
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C
FMN
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D
Oxaloacetate
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Solution

The correct option is B NAD$$^+$$
The last step of Krebs cycle is a dehydrogenation reaction which restores oxaloacetic acid by removing a pair of hydrogen atoms from malate with the help of an enzyme malate dehydrogenase. The pair of hydrogen atoms pass two electrons and one proton to NAD+, forming NADH + H+.
Thus, the correct answer is option A. 

713139_663277_ans_022f17c2edae4c37a17382edc97f7374.png

Biology

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