Enzymes Quick Check

Front

What are enzymes?

Back

Enzymes are biological catalysts that speed up chemical reactions in living organisms without being consumed in the process.

Front

Do enzymes provide energy to speed up reactions?

Back

FALSE - Enzymes do not provide energy; they lower the activation energy required for reactions.

Front

What factors can affect enzyme activity?

Back

Factors such as temperature, pH, and substrate concentration can affect enzyme activity.

Front

Which of the following is NOT an enzyme: catalase, galactase, lactase, or sucrose?

Back

Sucrose is NOT an enzyme; it is a sugar.

Front

What happens to an enzyme after it catalyzes a reaction?

Back

It can be reused for subsequent reactions.

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 denaturation in enzymes?

Back

Denaturation is the process where an enzyme loses its functional shape due to extreme conditions, rendering it inactive.

Front

What is the optimal pH for most enzymes?

Back

Most enzymes have an optimal pH around neutral (pH 7), but some work best in acidic or basic conditions.

Front

What is the role of substrates in enzyme reactions?

Back

Substrates are the reactants that enzymes act upon to facilitate a chemical reaction.

Front

What is the active site of an enzyme?

Back

The active site is the specific region of an enzyme where the substrate binds and the reaction occurs.