Microbial Metabolism Quiz 18

What is the sum of all chemical and biochemical reactions occurring in a cell called?

• Anabolism

• Enzyme activity

• Metabolism

• Catabolism

Which process involves the breaking down of macromolecules for energy generation?

• Anabolism

• Fermentation

• Catabolism

• Photosynthesis

What type of reaction consumes energy and is called endergonic?

• Chemical reactions

• Catabolic reactions

• Anabolic reactions

• Exergonic reactions

What is the term for the part of the enzyme where the substrate binds?

• Prosthetic group

• Co-factor

• Holoenzyme

• Active site

What happens to enzyme activity when substrate concentration increases?

• Decreases

• Increases until saturation

• Remains constant

• Stops completely

Which type of inhibition involves the inhibitor binding to the active site?

• Non-competitive inhibition

• Competitive inhibition

• Allosteric inhibition

• Feedback inhibition

What is the effect of temperature on enzyme activity?

• Enzymes work best at any temperature

• Higher temperatures always increase activity

• Enzymes can denature at high temperatures

• Temperature has no effect on enzymes

Which of the following is NOT a type of enzyme based on chemical composition?

• Ribozymes

• Lipids

• Proteins

• RNA

What is the complete enzyme called that includes both the apoenzyme and co-factor?

• Co-enzyme

• Apoenzyme

• Prosthetic group

• Holoenzyme

What is the term for the energy required to start a chemical reaction?

• Activation energy

• Potential energy

• Kinetic energy

• Thermal energy