Which out of the following amino acids is a precursor for a mediator of allergies and inflammation?

Choose a nano peptide out of the followings.

Choose the incorrect statement out of the followings.

A mutation has changed an isoleucine residue of a protein to Glutamic acid, which statement best describes its location in a hydrophilic exterior-

The 21st amino acid is

Acidic amino acids include

Positively charged basic amino acids are

Aromatic amino acids include

Which of the following is an α imino acid

The first amino acid in a polypeptide chain is