Bio-Chemistry (M.Phil./Ph.D.) 2021 Panjab University Entrance Exam With Answers

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40.

During the biosynthesis of urea in the urea cycle, the two nitrogen atoms are derived from

A: Two free ammonium groups
B: Free ammonium group and aspartate
C: Both nitrogen atoms are derived from arginine
D: One nitrogen atom is derived from citrulline and one from glutamate.

The answer is: B

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