Enzymes Quiz
Studying this course? Keep your progress in one place.
Pick an answer for each. Quizzes never use energy.
5 questions, one answer each
Each answer is checked as you go, with why.
See all 5 questions
1. What is the product of the digestion of starch by amylase?
- A. Amino acids
- B. Maltose
- C. Fatty acids
- D. Glycerol
2. Why does boiling destroy the activity of an enzyme?
- A. The substrate evaporates
- B. The enzyme is used up
- C. The active site changes shape so the substrate no longer fits
- D. The enzyme turns into starch
3. Which enzyme works best in the acid conditions of the stomach?
- A. Pepsin
- B. Salivary amylase
- C. Lipase
- D. Catalase
4. In an experiment, the student changes the pH and measures the time to digest the starch. What is the independent variable?
- A. The time taken
- B. The volume of starch
- C. The temperature
- D. The pH
5. A fall in temperature from 37 °C to 20 °C slows an enzyme. What best explains this?
- A. The enzyme is denatured
- B. Particles collide less often because they move more slowly
- C. The substrate has changed shape
- D. The pH has risen