Question

which statement about enzymes is false? 1 point at low substrate concentration, the presence of an enzyme greatly increases the rate of a reaction, but once the enzyme becomes saturated, the reaction rate levels off. some enzymes require cofactors (which are inorganic ions) to function. some enzymes require coenzymes (which are carbon - containing molecules) to function. an enzyme is permanently altered after speeding up a reaction. enzymes lower the activation energy needed to initiate chemical reactions.

Explanation:

Enzymes are biological catalysts. They lower the activation - energy of chemical reactions and are not permanently altered after the reaction. Some enzymes require cofactors (inorganic ions) or coenzymes (carbon - containing molecules) to function. At low substrate concentrations, enzyme - presence increases reaction rate, and at saturation, the rate levels off. The false statement is that an enzyme is permanently altered after speeding up a reaction.

Answer:

An enzyme is permanently altered after speeding up a reaction.