How Enzymes Function Quiz
1. Enzymes speed up the rate of a chemical reaction.True
2. Which of the following are true of an enzyme-catalyzed reaction? Check all that apply.
An enzyme speeds up the conversion of substrate to product; an enzyme reduces the
activation energy; enzymes are not used up in the chemical reaction
3. Which are method(s) to measure the activity of an enzyme? Check all that apply.
Measuring how much product is made; measuring how much substrate is used
4. To determine the activity of an enzyme, you can compare the concentration of the
enzyme before and after the chemical reaction False. Because the enzyme is not used up
in the reaction, the concentration of enzyme will not change.
5. Different types of enzymes may differ in optimal temperature and pH requirements,
depending upon where and how they function.True
6. an enzyme reduces the energy necessary to start a chemical reaction. This means that the
rate of the reaction will increase
7. what substance in a chemical reaction will not change in concentration as the reaction
proceeds?the enzyme
8. What happens to the amount of enzyme during a chemical reaction?it stays the same
9. Catalase is the enzyme that catalyzes the reaction that breaks down hydrogen peroxide to
oxygen and water. What will happen as the reaction between catalase and hydrogen
peroxide proceeds?the amount of hydrogen peroxide decreases; the amount of oxygen
gas formation increases.
1. Enzymes speed up the rate of a chemical reaction.True
2. Which of the following are true of an enzyme-catalyzed reaction? Check all that apply.
An enzyme speeds up the conversion of substrate to product; an enzyme reduces the
activation energy; enzymes are not used up in the chemical reaction
3. Which are method(s) to measure the activity of an enzyme? Check all that apply.
Measuring how much product is made; measuring how much substrate is used
4. To determine the activity of an enzyme, you can compare the concentration of the
enzyme before and after the chemical reaction False. Because the enzyme is not used up
in the reaction, the concentration of enzyme will not change.
5. Different types of enzymes may differ in optimal temperature and pH requirements,
depending upon where and how they function.True
6. an enzyme reduces the energy necessary to start a chemical reaction. This means that the
rate of the reaction will increase
7. what substance in a chemical reaction will not change in concentration as the reaction
proceeds?the enzyme
8. What happens to the amount of enzyme during a chemical reaction?it stays the same
9. Catalase is the enzyme that catalyzes the reaction that breaks down hydrogen peroxide to
oxygen and water. What will happen as the reaction between catalase and hydrogen
peroxide proceeds?the amount of hydrogen peroxide decreases; the amount of oxygen
gas formation increases.
