Question

In an experiment, a student mixed a substrate and an enzyme. Which statement BEST explains the reaction? A)The enzyme binds to the active sites on the substrate. B)The substrate binds to the non-active sites of the enzyme. C)The substrate acts as a coenzyme that catalyzes the reaction. D)The enzyme and the substrate form an enzyme-substrate complex.

Answer 1

D) The enzyme and substrate form an enzyme-substrate complex

Answer 2

D) The enzyme and substrate form an enzyme-substrate complex

An enzyme is a protein molecule that acts as a catalyst in biological reactions. It does so by acting on a substrate which is specific to its shape. The substrate binds to the enzyme's active site, forming the enzyme-substrate complex. The reaction is then complete and the product detaches from the enzyme molecule. The enzyme is then free to act on other substrate molecules.