In a protein molecule, the number of amino acid molecules may be as few as 5 500 50 5,000

50

Explanation:-

Proteins are polymers which are very critical for the normal functioning of the human body. They are essential for the structure, function, and regulation of the body’s tissues and organs.

Proteins are made up of number of smaller units called amino acids that are attached to one another by peptide bonds and thus form a long chain of polymer called as protein.

A protein at least 40 amino amino joined together by peptide bond is known as protein.