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How are the nitrogen atoms from proteins removed from our bodies?

As in the liver, the first step is the removal of the nitrogen from the amino acid. However, muscle lacks the enzymes of the urea cycle, so the nitrogen must be released in a form that can be absorbed by the liver and converted into urea.

Explanation:

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;