KE REVIEW ~ UNIT 2

Front

What is the role of enzymes in biochemical reactions?

Back

Enzymes act as catalysts that speed up biochemical reactions by lowering the activation energy required for the reaction to occur.

Front

What happens to an enzyme when it is denatured?

Back

When an enzyme is denatured, its three-dimensional structure is altered, preventing it from binding to its substrate and catalyzing the reaction.

Front

What is the significance of the active site of an enzyme?

Back

The active site is the specific region of an enzyme where the substrate binds, allowing the enzyme to catalyze the reaction.

Front

How does temperature affect enzyme activity?

Back

Enzyme activity typically increases with temperature up to an optimal point, after which high temperatures can denature the enzyme and decrease its activity.

Front

What is cohesion in the context of water?

Back

Cohesion refers to the attraction between water molecules, which allows them to stick together and contributes to surface tension.

Front

What is the importance of carbon in organic compounds?

Back

Carbon's ability to form four covalent bonds makes it versatile and essential for creating a wide variety of organic molecules.

Front

What is the primary structure of a protein?

Back

The primary structure of a protein is the sequence of amino acids that make up the protein chain.

Front

What is the difference between a substrate and an enzyme?

Back

A substrate is the reactant that an enzyme acts upon, while the enzyme is the catalyst that facilitates the reaction.

Front

What is activation energy?

Back

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

Front

What is the effect of pH on enzyme activity?

Back

Each enzyme has an optimal pH range; deviations from this range can lead to decreased activity or denaturation.