BIOMOLECULES AND ENZYMES

Detailed explanation-1: -A zwitterion is a compound with no overall electrical charge, but which contains separate parts which are positively and negatively charged. This is the form that amino acids exist in even in the solid state.

Detailed explanation-2: -A zwitterion is a molecule that includes both positive and negative regions of charge. The existence of amino acids as dipolar ions in a solid state is called zwitterions.

Detailed explanation-3: -All other amino acids contain four different groups. Hence all other amino acids are optically active. Therefore the correct statement is, all amino acids except glycine are optically active.

Detailed explanation-4: -Zwitterions in simple amino acid solutions An amino acid has both a basic amine group and an acidic carboxylic acid group. There is an internal transfer of a hydrogen ion from the-COOH group to the-NH2 group to leave an ion with both a negative charge and a positive charge. This is called a zwitterion.