Question

Deamination of amino acids in the excretory system will initially result in the formation of?

Answer 1

Deamination of amino acids in the excretory system will initially result in the formation of ammonia.

The NH2 (amino group) combines with a hydrogen ion (proton) to form ammonia (NH3).

Ammonia is very toxic and usually is excreted directly by marine animals. Terrestrial animals usually need to conserve water. Ammonia is converted to urea, a compound the body can tolerate at higher concentrations than ammonia.

Birds and insects secrete uric acid that they make through large energy expenditure but little water loss. Amphibians and mammals secrete urea that they form in their liver. Amino groups are turned into ammonia, which in turn is converted to urea, dumped into the blood and concentrated by the kidneys.

During deamination, enzymes remove the amino group as ammonia (NH3). Ammonia is toxic, even at low concentrations, and requires large amounts of water to flush it out of the body.

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