The urea cycle occurs in the kidneys.

The urea cycle helps remove toxic ammonia from the body.

ATP is not required for the urea cycle.

Ornithine is a key intermediate that is regenerated in the urea cycle.

What is the main purpose of the urea cycle?

Which process removes the amino group from an amino acid?

Which of the following is a product of amino acid catabolism?

What is the fate of excess nitrogen from amino acids?

What is the major organ responsible for amino acid metabolism?

Which amino acid is a key nitrogen donor in biosynthesis reactions?

What is the fate of the carbon skeleton of amino acids after deamination? Answer: ________ production.