BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Thus, the correct answer is ‘Urease is a simple enzyme’.

Detailed explanation-2: -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-3: -Enzymes composed wholly of protein are known as simple enzymes in contrast to complex enzymes, which are composed of protein plus a relatively small organic molecule.

Detailed explanation-4: -Enzymes are proteins comprised of amino acids linked together in one or more polypeptide chains. This sequence of amino acids in a polypeptide chain is called the primary structure. This, in turn, determines the three-dimensional structure of the enzyme, including the shape of the active site.

Detailed explanation-5: -Only few proteins have the capability to bind the substrate with the help of their active sites in such a manner that allows the reaction to take place in an efficient manner. Hence, all enzymes are proteins but all proteins are not enzymes.