Enzymes and Their Functions Quiz
Preview:
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 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 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.
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.
Which of the following is a cofactor?
A. Zinc
B. Chlorine
C. Gold
D. Carbon
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.
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.
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
Which of the following is an example of an enzyme?
A. Hemoglobin
B. Insulin
C. Amylase
D. Collagen
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.
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.
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 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.
All of the following are examples of Carbohydrates (sugars) EXCEPT…?
A. Sucrose
B. Glucose
C. Fructose
D. Nucleotides