Enzyme Quiz

What is the primary function of enzymes in biological systems?

• Speed up chemical reactions

• Break down chemical reactions

• Inhibit chemical reactions

• Store energy in biological systems

What is the basic structure of an enzyme?

What is the active site of an enzyme?

• A region on the enzyme where the product binds and the chemical reaction takes place.

• A region on the enzyme where the cofactor binds and the chemical reaction takes place.

• A region on the enzyme where the inhibitor binds and the chemical reaction takes place.

• A region on the enzyme where the substrate binds and the chemical reaction takes place.

What is the role of coenzymes in enzyme catalysis?

• Coenzymes inhibit enzyme catalysis by blocking active sites.

• Coenzymes have no role in enzyme catalysis.

• Coenzymes facilitate enzyme catalysis by carrying specific atoms or functional groups.

• Coenzymes enhance enzyme catalysis by increasing reaction rates.

What are the factors that can affect enzyme activity?

• mass, velocity, energy

• volume, color, density

• temperature, pH, substrate concentration, enzyme concentration, inhibitors or activators

• time, pressure, light intensity

What is the difference between competitive and non-competitive enzyme inhibition?

• Competitive enzyme inhibition occurs when a molecule binds to the active site, while non-competitive enzyme inhibition occurs when a molecule competes with the substrate for a site other than the active site.

• Competitive enzyme inhibition occurs when a molecule competes with the substrate for a site other than the active site, while non-competitive enzyme inhibition occurs when a molecule binds to the active site.

• Competitive enzyme inhibition occurs when a molecule competes with the substrate for the active site, while non-competitive enzyme inhibition occurs when a molecule binds to a site other than the active site.

• Competitive enzyme inhibition occurs when a molecule binds to a site other than the active site, while non-competitive enzyme inhibition occurs when a molecule competes with the substrate for the active site.

How does temperature affect enzyme activity?

• Temperature increases enzyme activity by decreasing the rate of reaction.

• Temperature decreases enzyme activity.

• Temperature affects enzyme activity by altering the enzyme's shape and increasing the rate of reaction.

• Temperature has no effect on enzyme activity.

What is the significance of pH in enzyme function?

• pH has no effect on enzyme function.

• pH affects the enzyme's structure and activity.

• pH only affects enzyme activity, not structure.

• Enzymes are not affected by pH.

What are the different types of enzyme inhibition?

• competitive inhibition, noncompetitive inhibition, and mixed inhibition

• allosteric inhibition, feedback inhibition, and substrate inhibition

• reversible inhibition, irreversible inhibition, and partial inhibition

• competitive inhibition, noncompetitive inhibition, and uncompetitive inhibition

How do enzymes catalyze chemical reactions?

• Enzymes lower the activation energy for chemical reactions.

• Enzymes convert chemical reactions into physical reactions.

• Enzymes have no effect on the activation energy for chemical reactions.

• Enzymes increase the activation energy for chemical reactions.