BIOMOLECULES AND ENZYMES

Detailed explanation-1: -The biuret test is a chemical test that can be used to check for the presence of peptide bonds in a given analyte. Therefore, the biuret test can also be used to gauge the amount of protein present in the analyte.

Detailed explanation-2: -The presence of protein is tested by the Biuret test for proteins. The Biurette reagent made of sodium hydroxide and copper (II) sulphate helps in determining the presence of protein in a sample.

Detailed explanation-3: -Biuret test positive: all peptides and protein give the test positive. Histidine is the only amino acid that give biuret test positive.