AP Bio Insta-Review Topic 3.2: Enzyme Catalysis

Front

What is the role of an enzyme in a chemical reaction?

Back

Enzymes act as catalysts that increase the rate of a chemical reaction without being consumed in the process.

Front

How do enzymes affect the activation energy of a reaction?

Back

Enzymes lower the activation energy required for a reaction to occur.

Front

What happens to the reaction rate when an enzyme is present?

Back

The reaction rate increases when an enzyme is present.

Front

What is activation energy?

Back

Activation energy is the minimum amount of energy required to initiate a chemical reaction.

Front

How does the presence of an enzyme change the activation energy?

Back

The presence of an enzyme decreases the activation energy needed for the reaction.

Front

What is the effect of temperature on enzyme activity?

Back

Enzyme activity generally increases with temperature up to a certain point, after which it may denature.

Front

What is enzyme denaturation?

Back

Denaturation is the process where an enzyme loses its functional shape, rendering it inactive.

Front

What factors can affect enzyme activity?

Back

Factors include temperature, pH, substrate concentration, and enzyme concentration.

Front

What is a substrate in the context of enzyme activity?

Back

A substrate is the reactant molecule upon which an enzyme acts.

Front

What is the active site of an enzyme?

Back

The active site is the specific region of an enzyme where the substrate binds.