Enzymes have a specific shape that allows them to bind to particular reactants, also known as substrates. This specificity is due to the enzyme's active site, which is uniquely shaped to fit its substrates. By binding to the substrate, enzymes can lower the activation energy needed for the reaction to occur, thus increasing the rate of the reaction. Therefore, option B is the best choice.

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Enzymes Function by

Question 66

Multiple Choice

Enzymes function by

A) increasing the activation energy needed to start a chemical reaction.
B) having a specific shape that allows them to bind to particular reactants.
C) each enzyme acting as a catalyst for many different reaction types.
D) greatly decreasing reaction rates.
E) doing all of these.

Correct Answer: