Metabolism and Biochemical Reactions Quiz

What is the role of enzymes in metabolism?

• Enzymes slow down chemical reactions

• Enzymes act as catalysts

• Enzymes are used up in reactions

• Enzymes prevent reactions from occurring

What is an example of an anabolic reaction?

• Hydrolysis

• Photosynthesis

• Aerobic respiration

• Fermentation

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

• Oxygen

• Carbon dioxide

• Water

• Glucose

What type of process is cell respiration?

• Endergonic

• Exergonic

• Anabolic

• Photosynthetic

What is required as an input for hydrolysis reactions in catabolism?

• Oxygen

• Carbon dioxide

• Water

• Light energy

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

• It increases the activation energy.

• It acts as a biological catalyst.

• It consumes the substrate.

• It changes 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 denaturation in the context of enzymes?

• Increase in enzyme activity

• Loss of biological activity

• Formation of enzyme-substrate complex

• Increase in substrate concentration