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Multiple Choice

Which amino acid is listed as found in acidic urine?

Understand how urine pH can influence which substances show up in urine. Among the options, only leucine and tyrosine are amino acids; the others are not. In discussions of amino acid excretion in acidic urine, leucine is the one commonly cited as being found, such as in certain aminoacidurias where branched-chain amino acids spill into urine. Cholesterol and sulfonamide are not amino acids, so they don’t fit. Tyrosine can appear in urine under specific metabolic conditions, but the prompt points to leucine as the amino acid typically listed for acidic urine.

Understand how urine pH can influence which substances show up in urine. Among the options, only leucine and tyrosine are amino acids; the others are not. In discussions of amino acid excretion in acidic urine, leucine is the one commonly cited as being found, such as in certain aminoacidurias where branched-chain amino acids spill into urine. Cholesterol and sulfonamide are not amino acids, so they don’t fit. Tyrosine can appear in urine under specific metabolic conditions, but the prompt points to leucine as the amino acid typically listed for acidic urine.