Question

# In Krebs cycle, malate hands over hydrogen to

A
B
C
FMN
D
Oxaloacetate

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. Biology

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