What makes an enzyme work specifically and directly on its own substrates? a.active site shape b.enzyme size c.allosteric site shape d.inhibitor shape

a.active site shape

Explanation

Most enzymes are protein in nature, and are made up of a chain of amino acid linked together by amide bonds in a linear pattern. They act as catalysts in a reaction to lower activation energy needed for a reaction by acting on specific substrates. The specificity of the enzyme is determined by the shape of its active site. The feature that is 'pocket-like' on an enzyme, on which the substrate binds, is called the active site. This feature is made up of specific amino acid sequence that identifies the type of substrate that can bind on it.