Amino Acids | MCQs

Explanation

Peptide Bond Hydrolysis: Each peptide bond (linking two amino acids) requires 1 water molecule to break.

4-Amino Acid Chain: A tetrapeptide has 3 peptide bonds, thus needing 3 water molecules for complete hydrolysis.

Example:

Ala-Gly-Val-Ser (4 amino acids) → Broken into 4 separate amino acids using 3 H₂O molecules.

Explanation

Explanation

Lactic acid is not an amino acid; glutamic acid, aspartic acid, and glycine are all amino acids. 

Lactic acid:

This is an organic compound involved in energy metabolism, but it does not have the characteristic structure of an amino acid. 

Explanation

Glycine is the simplest and neutral amino acid, with no extra acidic or basic side chains.

It has a hydrogen atom as its side group (R group), making it electrically neutral at physiological pH.

Explanation

Proteins and peptides, when hydrolyzed, break down into α-amino acids, which are the building blocks of proteins.

In α-amino acids, the amino group (–NH₂) is attached to the α-carbon, the carbon next to the carboxyl group.

Explanation

Amino acids are a product of the digestion of proteins.

During digestion, proteins are broken down into amino acids.

They are then absorbed and used by the body for various functions.

Explanation

The process involved in the breakdown of proteins into amino acids is hydrolysis.

During hydrolysis, water molecules are added to the peptide bonds in proteins.

It facilitating their cleavage into individual amino acids.