Question

which of the following statements about enzymes is true?
an enzyme does not change shape when it binds to a substrate.
enzymes raise the activation energy.
enzymes dont ever add stress to the bonds of a substrate.
enzymes are highly specific.
enzymes bind a diversity of substrates

Explanation:

• For the first option: Enzymes undergo an induced - fit model, meaning they change shape when binding to a substrate, so this is false.
• For the second option: Enzymes lower the activation energy of a reaction, not raise it, so this is false.
• For the third option: Enzymes can stress the bonds of a substrate to facilitate the reaction, so this is false.
• For the fourth option: Enzymes have a specific active site that is complementary to a specific substrate (or a group of very similar substrates), so they are highly specific.
• For the last (partially visible) option: Enzymes are specific and do not bind a diverse range of substrates generally, so this is false.

Answer:

Enzymes are highly specific.