Biology Honors Enzyme Review

Front

What is the purpose of an enzyme?

Back

Enzymes speed up chemical reactions by lowering the activation energy required for the reaction to occur.

Front

What is the active site of an enzyme?

Back

The active site is the specific region of an enzyme where the substrate binds and the reaction takes place.

Front

What is an enzyme?

Back

An enzyme is a biological catalyst that accelerates chemical reactions in living organisms.

Front

What is a substrate?

Back

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

Front

What are products in a chemical reaction?

Back

Products are the substances that are formed as a result of a chemical reaction.

Front

How do enzymes affect activation energy?

Back

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

Front

What factors can affect enzyme activity?

Back

Factors include temperature, pH, substrate concentration, and the presence of inhibitors or activators.

Front

What is an enzyme inhibitor?

Back

An enzyme inhibitor is a substance that decreases the activity of an enzyme by binding to it.

Front

What is an enzyme activator?

Back

An enzyme activator is a substance that increases the activity of an enzyme.

Front

What is the lock and key model of enzyme action?

Back

The lock and key model describes how the enzyme's active site (the lock) is specifically shaped to fit the substrate (the key).