Enzymes Kinetics Quiz

What is enzyme kinetics?

• Study of weather patterns

• Study of plant growth

• Study of human anatomy

• Study of biological and chemical reactions catalyzed by enzymes

What does the rate constant (k) measure?

• Volume of the reaction mixture

• Color of the reaction mixture

• Temperature of the reaction

• How rapidly a reaction occurs

What does the Michaelis-Menten equation describe?

• One of the best-known models of enzyme kinetics

• One of the best-known models of weather patterns

• One of the best-known models of plant growth

• One of the best-known models of human anatomy

What does the Michaelis constant (Km) represent?

• Amount of time taken for a reaction

• Amount of enzyme required for a reaction

• Amount of product formed in a reaction

• Amount of substrate required to bind 1/2 of the available enzyme

What is the turnover number (kcat) of an enzyme?

• Number of reactions a molecule of enzyme can catalyze per second

• Number of substrates required for a reaction

• Number of enzymes in a reaction

• Number of products formed in a reaction

What type of inhibitor binds to an enzyme through covalent bonds?

• Irreversible inhibitor

• Competitive inhibitor

• Reversible inhibitor

• Non-competitive inhibitor

Which type of reversible inhibitor competes with the substrate for enzyme binding?

• Competitive inhibitor

• Uncompetitive inhibitor

• Non-competitive inhibitor

• Irreversible inhibitor

What does a non-competitive inhibitor bind to in an enzyme?

• Only the substrate

• Free enzyme or enzyme-substrate complex

• Only free enzyme

• Only enzyme-substrate complex

What type of reaction involves one substrate binding first to the enzyme followed by product release?

• Random reaction

• Ordered reaction

• Sequential reaction

• Ping Pong reaction

What can be determined experimentally to calculate the kcat values of an enzyme?

• Km without an absolutely pure enzyme

• Km and Vmax

• Rate of ES formation and breakdown

• Vmax and absolute concentration of enzyme