To correctly identify unknown biomolecules in a laboratory setting, specialized diagnostic chemical tests are heavily employed. Which of the following standard biochemical tests specifically and relia

Question

To correctly identify unknown biomolecules in a laboratory setting, specialized diagnostic chemical tests are heavily employed. Which of the following standard biochemical tests specifically and reliably identifies the distinct presence of the intact peptide linkage ($-CO-NH-$) directly within complex proteins?

Prashant Kotian · Accepted Answer

Correct answer: B. The Biuret test reliably utilizes alkaline solution to precisely detect the intact presence of multiple sequential peptide bonds, rapidly yielding a distinctive deep violet/purple complex strictly with proteins. The Ninhydrin test merely identifies free -amino groups broadly.

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