BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Enzymes are proteins comprised of amino acids linked together in one or more polypeptide chains.

Detailed explanation-2: -An enzyme is an organic molecule (usually a protein) that catalyzes a cellular reaction.

Detailed explanation-3: -21.91 a. An apoenzyme is the protein portion of a conjugated enzyme; a proenzyme is an inactive precursor of an enzyme. b. A simple enzyme contains only protein; an allosteric enzyme has two or more protein chains and two binding sites.

Detailed explanation-4: -All enzymes were once thought to be proteins, but since the 1980s the catalytic ability of certain nucleic acids, called ribozymes (or catalytic RNAs), has been demonstrated, refuting this axiom.

Detailed explanation-5: -The building blocks of proteins are amino acids, which are small organic molecules that consist of an alpha (central) carbon atom linked to an amino group, a carboxyl group, a hydrogen atom, and a variable component called a side chain (see below).