Anaerobic Respiration Quiz
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5 questions, one answer each
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1. Which of the following is NOT a use of energy in living organisms?
- A. Storage of glucose in the liver
- B. Muscle contraction during exercise
- C. Active transport across cell membranes
- D. Protein synthesis in ribosomes
2. Anaerobic respiration in yeast produces ethanol and carbon dioxide. What is the primary advantage of this process in yeast cells when oxygen is unavailable?
- A. It produces more ATP than aerobic respiration
- B. It allows the organism to continue generating ATP for survival
- C. It eliminates the need for mitochondria
- D. It produces larger quantities of glucose
3. In an investigation of respiration in yeast, the rate of CO₂ production increases as temperature rises from 0°C to 40°C. What does this demonstrate about the effect of temperature on respiration?
- A. Higher temperatures permanently increase enzyme activity
- B. Enzyme activity increases with temperature up to an optimum point
- C. Yeast cannot respire below 20°C
- D. Temperature has no effect on the rate of respiration
4. A student observes that yeast respiration slows significantly when temperature exceeds 50°C. Which of the following best explains this observation?
- A. The yeast has used up all available glucose
- B. Enzymes involved in respiration have become denatured
- C. The yeast no longer requires ATP
- D. Anaerobic respiration becomes more efficient
5. A marathon runner's muscles require continuous energy supply during a race. Explain why both aerobic and anaerobic respiration occur in their muscle cells, and identify which process is likely dominant during the final sprint.
- A. Aerobic respiration alone provides sufficient ATP; anaerobic respiration does not occur during exercise
- B. Aerobic respiration provides most ATP continuously, but anaerobic respiration supplements this during intense effort when oxygen demand exceeds supply
- C. Anaerobic respiration is always dominant because it is faster than aerobic respiration
- D. Both processes occur equally throughout the race with no change in contribution