The most abundant end product of nitrogen metabolism in humans is which of the following?

Question

Quizplus · Accepted Answer

Glutamate plays the central role in mammalian nitrogen flow, serving as both a nitrogen donor and nitrogen acceptor. Glutamine is the nitrogen repository found in the circulatory system. Its role there is to carry ammonia to and from various tissues but principally from peripheral tissues to the kidney. In the kidneys, glutamine is hydrolyzed by glutaminase (yielding glutamate) releasing the ammonia to the urine. Additionally, the glutamate can be converted to a-ketoglutarate yielding another mole of ammonia which is excreted.

The Most Abundant End Product of Nitrogen Metabolism in Humans