Biology Enzymes

Front

Enzymes are _____________?

Back

Proteins

Front

What happens to an enzyme when it denatures?

Back

The shape of the enzyme molecule is changed.

Front

What is the role of enzymes in biochemical reactions?

Back

Enzymes act as catalysts to speed up chemical reactions by lowering the activation energy.

Front

What is the active site of an enzyme?

Back

The active site is the specific region of the enzyme where substrate molecules bind and undergo a chemical reaction.

Front

What factors can affect enzyme activity?

Back

Temperature, pH, substrate concentration, and the presence of inhibitors or activators.

Front

What happens when enzymes are heated to a high temperature?

Back

The shapes of the enzyme are altered (denatured).

Front

What is a substrate in the context of enzymes?

Back

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

Front

What is enzyme specificity?

Back

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

Front

What is the effect of pH on enzyme activity?

Back

Each enzyme has an optimal pH at which it functions best; deviations can lead to decreased activity or denaturation.

Front

What is a coenzyme?

Back

A coenzyme is a non-protein organic molecule that assists enzymes in catalyzing reactions.