A deficiency in which ONE of the following enzymes would be most likely to cause hyperammonemia?

Question

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Hyperammonemia is caused by an accumulation of ammonia, which is normally converted to urea in the liver. Carbamoyl phosphate synthetase I is an enzyme involved in the urea cycle and a deficiency in this enzyme would lead to a buildup of ammonia and hyperammonemia. The other enzymes listed do not play a direct role in the urea cycle or ammonia metabolism.

A Deficiency in Which ONE of the Following Enzymes Would