Enzymes

Front

What is the primary function of enzymes in biological systems?

Back

Enzymes speed up chemical reactions by lowering the activation energy required.

Front

What happens to enzymes when they are exposed to high temperatures?

Back

The shapes of the enzymes are altered, which can lead to denaturation and loss of function.

Front

True or False: Every enzyme has an optimal temperature and pH at which it functions best.

Back

True.

Front

What is the optimum pH of an enzyme if a graph indicates maximum activity at pH 6.6?

Back

The optimum pH of the enzyme is 6.6.

Front

What term is used to describe a substance that speeds up a chemical reaction?

Back

Catalyst.

Front

What is the role of the active site in an enzyme?

Back

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

Front

How do competitive inhibitors affect enzyme activity?

Back

Competitive inhibitors bind to the active site of the enzyme, preventing substrate binding and reducing enzyme activity.

Front

What is the effect of pH on enzyme activity?

Back

Each enzyme has an optimal pH range; deviations from this range can decrease activity or denature the enzyme.

Front

What is enzyme specificity?

Back

Enzyme specificity refers to the ability of an enzyme to select and catalyze a specific substrate among many possible candidates.

Front

What is the difference between an enzyme and a coenzyme?

Back

An enzyme is a protein that catalyzes reactions, while a coenzyme is a non-protein molecule that assists enzymes in their function.