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Biochemistry · Amino acid metabolism
Sample itemWhere is ammonia converted to urea?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
D. Liver
The core Amino acid metabolism principle identifies Liver as the best answer because it most directly explains the biochemical pathway or tissue response described in the stem.
Option by option
A. Kidney
Kidney does not match the stated amino acid metabolism mechanism.
B. Spleen
Spleen is relevant in another context but is not the best answer here.
C. Heart
Heart does not account for the central finding in this sample.
D. Liver (correct)
Correct. Liver is supported by the key clue given.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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