Metabolism and Biochemical Reactions Quiz

What role do enzymes play in metabolism?

• They slow down chemical reactions.

• They act as catalysts to speed up chemical reactions.

• They are used up in the reactions they catalyze.

• They prevent reactions from occurring.

What is the process called when smaller compounds are combined to form larger compounds?

• Hydrolysis

• Oxidation

• Condensation

• Reduction

Which of the following is an example of an anabolic reaction?

• Hydrolysis

• Photosynthesis

• Aerobic respiration

• Fermentation

What is released as a by-product of condensation reactions?

• Oxygen

• Carbon dioxide

• Water

• Glucose

What type of process is cell respiration?

• Endergonic

• Exergonic

• Anabolic

• Photosynthetic

What is the primary role of an enzyme in a chemical reaction?

• To increase the activation energy

• To act as a biological catalyst

• To consume the substrate

• To change the products

What is the term used to describe the specific area where a substrate binds on an enzyme?

• Active site

• Binding site

• Reaction site

• Catalytic site

Which model describes an enzyme's active site fitting precisely with a substrate?

• Induce fit model

• Lock and key model

• Random fit model

• Enzyme-substrate model

What can increase the frequency of successful collisions in enzyme reactions?

• Decreasing molecular motion

• Increasing molecular motion

• Reducing thermal energy

• Lowering concentration of particles

What is the process called when an enzyme loses its biological activity due to changes in temperature or pH?

• Activation

• Denaturation

• Catalysis

• Reversion