Enzymes and Their Functions Quiz
Preview:
What is the active site of an enzyme?
A. The part of the enzyme where substrates bind and undergo a chemical reaction.
B. The part of the enzyme that is permanently altered during the reaction.
C. The part of the enzyme that binds to inhibitors.
D. The part of the enzyme that is responsible for its solubility in water.
Which of the following is a characteristic of enzymes?
A. They are made up of nucleic acids.
B. They are specific to their substrates.
C. They are consumed in the reactions they catalyze.
D. They can function at any pH level.
Which of the following statements is true about enzyme-substrate specificity?
A. Enzymes can bind to any substrate.
B. Enzymes and substrates are like two puzzle pieces that fit together making them specific
C. Enzymes are specific to their substrates due to their size.
D. Enzymes are specific to their substrates due to their charge.
How does pH affect enzyme activity?
A. Enzyme activity is highest at extreme pH levels.
B. Each enzyme has a preferred or best pH that they work best in.
C. Enzyme activity is not affected by pH.
D. Enzyme activity increases with increasing pH.
What is the effect of high/extreme temperatures on enzymes?
A. Enzyme activity decreases with increasing temperature.
B. Enzymes are denatured/broken with extreme temperatures.
C. Enzyme activity is not affected by temperature.
D. Enzyme activity is highest at very low temperatures.
Which of the following best describes the role of an enzyme in a chemical reaction?
A. Enzymes increase the activation energy required for the reaction.
B. Enzymes decrease the activation energy required for the reaction.
C. Enzymes are consumed in the reaction.
D. Enzymes change the equilibrium position of the reaction.
Which macromolecule is in charge of storing your genetic information? (DNA & RNA)
A. Lipids
B. Carbohydrates
C. Nucleic Acids
D. Proteins
How does a non-competitive inhibitor affect an enzyme’s activity?
A. It binds to the active site, preventing substrate binding.
B. It binds to a site other than the active site, changing the enzyme’s shape.
C. It increases the enzyme’s affinity for the substrate.
D. It is consumed in the reaction.
All of the following are examples of Carbohydrates (sugars) EXCEPT…?
A. Sucrose
B. Glucose
C. Fructose
D. Nucleotides
What is the primary function of cofactors in enzymatic reactions?
A. To provide energy for the reaction.
B. To help enzymes start and complete reactions.
C. To act as a substrate for the enzyme.
D. To inhibit the enzyme’s activity.
What Personal Protective Equipment (PPE) can be used to keep your eyes safe in a lab setting?
A. Goggles
B. Lab Coat
C. Microscope
D. Gloves
What role do vitamins often play in enzymatic reactions?
A. They act as substrates.
B. They act as coenzymes.
C. They act as inhibitors.
D. They act as products.
Which macromolecule is made up of fatty acids and glycerol?
A. Proteins
B. Lipids
C. Nucleic Acids
D. Carbohydrates
What does the term BIOMOLECULE mean?
A. Molecules that are able to be made anywhere.
B. Molecules that have potassium in them.
C. Molecules that can only be made by living things and are necessary for life.
D. Molecules made by marine life.
Which of the following best describes the induced fit model of enzyme activity?
A. The enzyme’s active site is a perfect fit for the substrate.
B. The enzyme changes its shape to better grab on to and fit the substrate.
C. The substrate changes shape to fit the enzyme’s active site.
D. The enzyme and substrate do not change shape during binding.
Which of the following statements is true about competitive inhibition?
A. The inhibitor binds to the enzyme at a site other than the active site.
B. The inhibitor competes with the substrate to see who gets to the binding site first.
C. The inhibitor permanently deactivates the enzyme.
D. The inhibitor increases the enzyme’s activity.
Which of the following is a cofactor?
A. Zinc
B. Chlorine
C. Gold
D. Carbon
What is the rule for properly disposing of broken glass in a lab setting?
A. Pick it up with your hands and throw it in the trash.
B. Pick it up with a broom and throw it in the trash.
C. Let your instructor know and let them dispose of it in the broken glass container.
D. Leave it where it is.
Which of the following is an example of an enzyme?
A. Hemoglobin
B. Insulin
C. Amylase
D. Collagen
How does your body use carbohydrates?
A. As easy sources of energy your body can break down.
B. As chemicals your body stores extra energy in.
C. To pass down your genetic information to future information.
D. To build muscle, tissue, organs, and color.
Disclaimer:
Medical Quiz should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. All content on this website is for informational and educational purposes only.