Q: When vertebrate animals metabolize ammonia what is the primary byproduct that is produced?


Read this paragraph and choose the correct option from the provided answers:

41.4 Nitrogenous Wastes Ammonia is the waste produced by metabolism of nitrogen-containing compounds like proteins and nucleic acids. While aquatic animals can easily excrete ammonia into their watery surroundings, terrestrial animals have evolved special mechanisms to eliminate the toxic ammonia from their systems. Urea is the major byproduct of ammonia metabolism in vertebrate animals. Uric acid is the major byproduct of ammonia metabolism in birds, terrestrial arthropods, and reptiles.

 Choices:

- carbon monoxide

- dioxide

- proteins

- urea


A:
urea