Biuret test is used for the detection of

In a protein molecule,various amino acids are linked together by:

Which of the following statements are correct? A) $\alpha - \text{amino acids present in protein is L- amino acid.}$ B) $\text{Amino acids contain } NH_2 \text{ as well as COOH group.}$ C) $\text{Number of amino group and carboxylic group are same in amino acids always.}$ D) $\text{Tryosine was firstly obtained from cheese.}$ Choose the correct alternatives from below:

Identify the acidic amino acid from the following list represented by three-letter symbols.

The main structural linkage of protein is

During the denaturation of proteins,which of these structures will remain intact?