Enzymes

Why is temperature important for enzyme activity?

• It determines the pH level of the environment.

• It affects the kinetic energy of molecules, influencing the rate of enzyme reactions.

• It increases the concentration of substrates available for the reaction.

• It stabilizes the enzyme structure, preventing denaturation.

What is the role of substrates in enzyme reactions?

• Substrates are the products formed after the reaction.

• Substrates are the reactants that enzymes act upon to facilitate a chemical reaction.

• Substrates are the enzymes that catalyze the reaction.

• Substrates are the inhibitors that prevent enzyme activity.

What is enzyme kinetics?

• The study of the rates of enzyme-catalyzed reactions.

• The process of enzyme synthesis in the body.

• The measurement of enzyme concentration in a solution.

• The analysis of enzyme structure and function.

What do enzymes typically end with?

• -ase

• -ine

• -ose

• -ate

What is the difference between competitive and non-competitive inhibitors?

• Competitive inhibitors bind to the active site, while non-competitive inhibitors bind to another part of the enzyme.

• Both types of inhibitors bind to the active site of the enzyme.

• Non-competitive inhibitors increase the reaction rate, while competitive inhibitors decrease it.

• Competitive inhibitors are irreversible, while non-competitive inhibitors are reversible.

What is the relationship between enzyme concentration and reaction rate?

• Increasing enzyme concentration decreases the reaction rate.

• Increasing enzyme concentration generally increases the reaction rate, provided substrates are available.

• Enzyme concentration has no effect on reaction rate.

• Reaction rate is only affected by temperature, not enzyme concentration.

What happens to enzymes at high temperatures?

• They become more active and efficient.

• They can denature, changing their shape and function.

• They increase in concentration.

• They remain unchanged.

What is a cofactor in enzyme activity?

• A cofactor is a protein that speeds up reactions.

• A cofactor is a non-protein molecule that assists enzymes in catalyzing reactions.

• A cofactor is a type of enzyme that breaks down substrates.

• A cofactor is a molecule that inhibits enzyme activity.

What is denaturation in the context of enzymes?

• A process where enzymes gain new functions under extreme conditions.

• The process where enzymes lose their shape and functionality due to extreme conditions.

• A method to enhance enzyme activity by increasing temperature.

• The process of enzymes binding to substrates more effectively.

What is the significance of enzyme specificity?

• Enzymes can catalyze multiple reactions simultaneously.

• Enzymes are specific to their substrates, meaning each enzyme only catalyzes a particular reaction.

• Enzymes are not affected by temperature or pH changes.

• Enzymes can function without any substrate.