What are enzymes?

Explanation

Enzymes : They are biological catalysts-produced by living cells which catalysts the biological reactions.
Characteristics or enzymes
(i) Enzymes are highly specific in nature.
(ii) A small amount of enzymes is quite sufficient in catalysing the reaction.
(iii) These are most active at moderate pH and moderate temperature.
(iv) The activity of many enzymes is regulated by number of mechanisms and inhibited by various organic and iorganic molecules.