Which of the following is the first formed ni | vedclass

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(C) Nitrogenous compounds are produced by various metabolic processes,primarily through the process of deamination of amino acids.In vertebrates,the f

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$NH_3$

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(C) Nitrogenous compounds are produced by various metabolic processes,primarily through the process of deamination of amino acids.In vertebrates,the first nitrogenous waste product formed during protein metabolism is ammonia $(NH_3)$.Ammonia is highly toxic and requires a large amount of water for its elimination.Since the earliest vertebrates were aquatic (fish),they could easily excrete ammonia directly into the surrounding water through their gills via diffusion.Therefore,$NH_3$ is considered the primary and first-formed nitrogenous waste in the vertebrate lineage.

Which of the following is the first formed nitrogenous waste in vertebrates?

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