Q: In humans, proline can be synthesized from glutamate which in turn can be derived from α-ketoglutarate. It can therefore be concluded that:
A		proline is necessary for the Krebs cycle.
B		glutamate and proline play similar roles in proteins.
C		proline production is an irreversible reaction in the body.
D		proline is not an essential amino acid in humans.

Citric Acid Cycle | Miscellaneous Biochemistry |