Enzymes Review

Front

What happens to the shape of the active site when an enzyme is denatured?

Back

It becomes deformed and does not match the substrate.

Front

What is the optimal temperature for enzymes in bacteria that live in hot springs (80 °C)?

Back

80 °C.

Front

What is the region of the enzyme that binds to the substrate called?

Back

The active site.

Front

What is the optimal pH for the enzyme pepsin, which breaks down proteins in the stomach?

Back

2.

Front

What type of macromolecule is an enzyme?

Back

Protein.

Front

What is the role of enzymes in biological reactions?

Back

Enzymes act as catalysts to speed up chemical reactions without being consumed.

Front

How do temperature changes affect enzyme activity?

Back

Increased temperature can increase activity up to a point, but extreme heat can denature the enzyme.

Front

What is enzyme specificity?

Back

Enzyme specificity refers to the ability of an enzyme to choose exact substrates from a group of similar chemical molecules.

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.

Front

What is a substrate in the context of enzyme activity?

Back

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