Macromolecules and enzymes

Front

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

Back

An enzyme speeds up a chemical reaction by lowering the activation energy required for the reaction to occur.

Front

True or False: An enzyme can be used multiple times in chemical reactions.

Back

True

Front

What analogy is often used to describe the relationship between an enzyme and its substrate?

Back

Lock and key.

Front

What happens to an enzyme when it is denatured?

Back

It loses its shape and, consequently, its function.

Front

What factors can lead to the denaturation of an enzyme?

Back

Changes in pH and temperature.

Front

What type of macromolecule are enzymes classified as?

Back

Proteins.

Front

What is the active site of an enzyme?

Back

The region on the enzyme where the substrate binds.

Front

How does temperature affect enzyme activity?

Back

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

Front

What is the significance of the enzyme-substrate complex?

Back

It is the intermediate formed when an enzyme binds to its substrate, allowing the reaction to proceed.

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.