Question

Read the given paragraph and write answers of the following questions.
Protein is very essential for the growth, development and maintenance of living systems. Proteins are natural polymer of $\alpha -$amino acids. A definite sequence of amino acids form a specific protein. Two or more than two amino acids bind to give peptide bond. Proteins are polypeptide, which loses its biological activity by physical or chemical changes.
(A) Explain essential and non-essential amino acid with example.
(B) Explain denaturation of protein.

Answer 1

(A)

• Essential Amino acids : 8 amino acids which are not synthesised in human body said to be essential like valine, iso-leucine etc [obtained from food]
• Non-essential amino acids : Amino acids which are synthesised in human body eg. alanine, glutemine.

(B)

Denaturation is a process in which proteins lose the quaternary structure, tertiary structure and secondary structure which is present in their native state, by application of strong acids or bases or an organic solvent like alcohol.