AP Bio Insta-Review Topic 3.2: Enzyme Catalysis

Front

What is activation energy?

Back

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

Front

How do enzymes affect activation energy?

Back

Enzymes lower the activation energy required for a reaction, making it easier for the reaction to occur.

Front

What is the effect of lower activation energy on reaction rate?

Back

Lower activation energy increases the reaction rate.

Front

What is the relationship between enzymes and reaction rate?

Back

Enzymes increase the reaction rate by lowering the activation energy.

Front

What happens to the Gibbs free energy change when an enzyme is used?

Back

The change in Gibbs free energy stays the same regardless of the presence of an enzyme.

Front

Define enzyme catalysis.

Back

Enzyme catalysis is the process by which enzymes accelerate chemical reactions by lowering the activation energy.

Front

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

Back

The role of an enzyme is to act as a catalyst, speeding up the reaction without being consumed in the process.

Front

Can enzymes be reused after a reaction?

Back

Yes, enzymes can be reused multiple times after catalyzing a reaction.

Front

What factors can affect enzyme activity?

Back

Factors that can affect enzyme activity include temperature, pH, and substrate concentration.

Front

What is a substrate in the context of enzyme activity?

Back

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