7.3 Fermentation

7.3 Fermentation

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Question 1 of 13

1. Question
0 point(s)
What is the main end product of anaerobic respiration in human muscles during intense exercise?
- Ethanol
- Carbon dioxide
- Lactic acid
- Pyruvate
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Question 2 of 13

2. Question
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Why is anaerobic respiration considered less efficient than aerobic respiration?
- It does not produce carbon dioxide
- It uses more glucose
- It only produces 2 ATP per glucose
- It occurs in mitochondria
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Question 3 of 13

3. Question
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What is the role of anaerobic respiration in yeast?
- Produces alcohol and ATP
- Produces water and carbon dioxide
- Produces NADPH and glucose
- Produces oxygen
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Question 4 of 13

4. Question
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Which condition causes human muscles to carry out anaerobic respiration?
- Resting after eating
- Running a long-distance marathon
- Sudden intense physical activity
- Deep breathing during sleep
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Question 5 of 13

5. Question
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What is the main end product of glucose fermentation by yeast in the absence of oxygen?
- Lactic acid and ATP
- Ethanol and carbon dioxide
- Glucose and water
- Pyruvate and ATP
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Question 6 of 13

6. Question
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Why is anaerobic respiration important during intense exercise?
- Produces more energy than aerobic
- Supplies energy when oxygen is insufficient
- Produces additional oxygen
- Reduces heart rate
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Question 7 of 13

7. Question
0 point(s)
What are the main products of anaerobic respiration in yeast?
- Glucose and oxygen
- Ethanol and carbon dioxide
- Lactic acid and oxygen
- Glucose and water
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Question 8 of 13

8. Question
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What is the function of the zimase enzyme in anaerobic respiration of yeast?
- Converts glucose to oxygen
- Breaks down glucose into amino acids
- Converts glucose into ethanol and carbon dioxide
- Increases ATP production in mitochondria
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Question 9 of 13

9. Question
0 point(s)
What is the function of paraffin oil in anaerobic yeast respiration experiments?
- Provides nutrients for yeast
- Maintains a constant temperature
- Absorbs oxygen from the air
- Prevents oxygen from entering
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Question 10 of 13

10. Question
0 point(s)
What is the effect of 60°C temperature in anaerobic respiration experiments with yeast?
- Increases enzyme activity
- Yeast reproduces faster
- Yeast enzymes are denatured
- Respiration becomes more efficient
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Question 11 of 13

11. Question
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What happens to lactic acid in muscles after prolonged exercise?
- Increases due to lack of oxygen
- Decreases due to more oxygen
- Remains unchanged
- Disappears immediately
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Question 12 of 13

12. Question
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What is the effect of lactic acid accumulation in muscles after exercise?
- Increases muscle strength
- Causes cramps and fatigue
- Raises heart rate
- Increases environmental temperature
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Question 13 of 13

13. Question
0 point(s)
Which post-exercise action helps repay oxygen debt?
- Lying down with eyes closed
- Breathing fast and deeply
- Drinking cold water
- Holding your breath for a while
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