Enzymology Quiz

What is catalysis in a chemical reaction?

• No effect on the rate of reaction

• Consumption of the catalyst

• Increase in the rate of reaction

• Decrease in the rate of reaction

What is the main factor influencing the rates of enzyme reactions?

• Concentration of substrate

• Temperature

• Presence of metal ions

• pH level

What is the function of proteins as catalysts in living cells?

• Maintaining cell structure

• Regulating cellular processes

• Producing energy

• Storing genetic information

At what temperature do enzyme reactions take place?

• Below body temperature

• Varies depending on the enzyme

• Above body temperature

• At body temperature

How many substrate molecules can one molecule of carbonic anhydrase convert per second?

• Hundreds

• Thousands

• Millions

• Billions

Why are different enzymes required for almost every reaction?

• To limit the range of reactions

• To regulate cellular processes

• To increase the rate of reaction

• To promote non-aqueous reactions

What are prosthetic groups in enzymes composed of?

• Proteins

• Vitamins

• Organic molecules

• Metal ions

What is the role of coenzymes in enzyme reactions?

• Act as catalysts

• Provide structural support

• Transfer chemical groups

• Regulate temperature

How do competitive inhibitors affect enzyme activity?

• Decrease enzyme concentration

• Bind irreversibly to the enzyme

• Compete with substrate for active site

• Enhance enzyme-substrate binding

What is the significance of allosteric regulation in enzyme function?

• Controls enzyme activity based on substrate concentration

• Prevents enzyme denaturation

• Stimulates enzyme production

• Regulates enzyme activity through binding at sites other than the active site