Worksheet Chapter 7: Cellular Respiration

1. Explain the role of yeast in the bread-making industry.

2. Construct a comparison table listing three differences between Aerobic Respiration and Lactic Acid Fermentation in human muscle cells.

3. Compare the energy efficiency of aerobic respiration with alcohol fermentation.

4. How many ATP molecules are produced net per glucose molecule during aerobic respiration?

5. State the two main products of alcohol fermentation in yeast besides ATP energy.

6. Define the term 'oxygen debt' in the context of human muscle physiology.

7. An athlete completes a 400-meter sprint and experiences muscle cramps: (a) Identify the respiratory process taking place in the athlete's muscle cells during the sprint. (b) Write the chemical equation for this process. (c) Explain how the muscle cramps are relieved after the race.

8. True or False: Glycolysis requires molecular oxygen to split glucose into pyruvate.

9. True or False: Paddy plants can tolerate high levels of ethanol because their cells produce the alcohol dehydrogenase enzyme.

10. Fill in the blank: The primary site for the Krebs cycle and electron transport chain during aerobic respiration is the ________.