Enzymes are important substances in your body that help bring about specific biochemical reactions. Which of the following are true of enzymes?

Question

Select TWO correct answers.

Enzymes help speed up chemical reactions in our bodies.

Enzymes include amylase, which helps break down carbohydrates, and protease, which helps break down proteins.

Enzymes are only used once by the body and are not considered recyclable.

Enzymes are considered lipids because they have fatty acids.

Enzymes are catalysts that raise the activation energy needed to start a reaction.

Answer 1

The two correct answers about enzymes are:

1. Enzymes help speed up chemical reactions in our bodies.
2. Enzymes include amylase, which helps break down carbohydrates, and protease, which helps break down proteins.

The other statements are incorrect for the following reasons:

• Enzymes are not used only once; they are reusable and can catalyze multiple reactions.
• Enzymes are not lipids; they are proteins and do not contain fatty acids.
• Enzymes are catalysts that lower the activation energy needed to start a reaction, not raise it.