Enzymes

Front

What are the two main factors that affect an enzyme's operation?

Back

Temperature and pH.

Front

What is the term for the molecule that an enzyme acts upon?

Back

Substrate.

Front

What are the substances produced by an enzyme after a reaction called?

Back

Products.

Front

Enzymes are classified as which type of biological macromolecule?

Back

Proteins.

Front

In the lock-and-key model of enzyme action, what fits into the active site?

Back

Substrate.

Front

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

Back

To speed up the reaction by lowering the activation energy.

Front

What is the active site of an enzyme?

Back

The specific region where the substrate binds.

Front

How does temperature affect enzyme activity?

Back

Increased temperature generally increases activity up to a point, after which the enzyme may denature.

Front

What happens to an enzyme when it denatures?

Back

It loses its functional shape and can no longer catalyze reactions.

Front

What is the effect of pH on enzyme activity?

Back

Each enzyme has an optimal pH range; deviations can reduce activity or denature the enzyme.