Question

Which of the following statements is INCORRECT about enzymes?

A. they do not get used up in a reaction
B. the higher the concentration of the substrate (reactant), the slower the reaction will happen.
C. they increase the speed of the reaction
D.enzymes are protein
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Answer 1

The answer is B. The higher the concentration of substrate, the FASTER a reaction happens (since there are more opportunities for molecules to collide in a way that favours the reaction), so B is an incorrect statement.

The other three options describe correct features of catalysts and/or enzymes (which are considered “biological catalysts”).