Enzyme Activity Quiz

What happens to enzyme activity as substrate concentration increases?

• It remains constant.

• It decreases and then increases.

• It decreases continuously.

• It increases and then saturates.

How does temperature affect enzyme activity?

• Enzyme activity is unaffected by temperature.

• Enzyme activity decreases with increasing temperature.

• Enzyme activity increases with temperature until a point, then decreases.

• Enzyme activity is highest at freezing temperatures.

Which of the following is a post-translational mechanism that cells use to control enzyme activity?

• Ionization

• Saturation

• Phosphorylation

• Denaturation

What is the role of competitive inhibitors in enzyme activity?

• They bind to the allosteric site.

• They bind to the enzyme-substrate complex.

• They compete with the substrate for the active site.

• They increase the enzyme's activity.

How do non-competitive inhibitors affect enzyme activity?

• They bind only to free enzymes.

• They bind to the active site.

• They increase the enzyme's affinity for the substrate.

• They cause a conformational change in the enzyme.