The false statement about an enzyme is; "an enzyme can catalyze most reactions if the reactants are at a high concentration.
Enzymes are biochemical catalysts which catalyze specific reactions in the body.
Enzymes function on the bases of a lock and key model. Enzymes have active sites that look exactly like their substrates  such that the enzymes fits exactly into its substrate as a lock fits a key.
Enzymes are highly specific so it is false to say that an enzyme can catalyze most reactions if the reactants are at a high concentration.
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