Science 9 (SNC1D)
Biology: Sustainable Ecosystems
Cellular Respiration Worksheet
Name: ____________________________
Instructions
Answer the following questions after reading pages 28-35 in your textbook.
1.3 Extracting Energy from Biomass
Cellular Respiration
1. Briefly explain cellular respiration.
2. What is the difference between cellular respiration and fermentation?
3. What types of organisms use fermentation to obtain energy?
4. Can you think of any applications of fermentation? Hint: It has something to do with something your parents
might drink.
5. What types of organisms perform cellular respiration?
6. Write down the chemical equation for cellular respiration.
Extracting Energy from Food
7. Do plants perform both photosynthesis and cellular respiration? If so, why?
8. What is the name of the gas that is required for cellular respiration?
9. What is the name of the gas that is required for photosynthesis?
10. How are photosynthesis and cellular respiration related?
Carbon Dioxide and Other Greenhouse Gases
11. What are greenhouse gases?
12. In your own words and using a simple diagram, explain the greenhouse effect.
13. Explain how human activities since the Industrial Revolution have enhanced the greenhouse effect.
Reducing Carbon Dioxide in the Atmosphere
14. Identify and explain the three (3) actions that are currently being taken by our governments to reduce the
amount of carbon dioxide in the atmosphere. (see Table 1.3 on page 31)
Fuel from Waste
15. Briefly explain how bacteria in landfills can produce fuel for humans.
16. How much energy is produced from a single landfill site in Sudbury in one year?
Acid Precipitation
17. What is acid precipitation?
18. What types of acids are produced as a result of the burning of nitrogen oxides and sulfur dioxide?
19. What is the pH scale?
20. Acidic substances have what values on the pH scale? What about basic substances?
21. Why do you think that natural, unpolluted rainwater still has a pH of about 5.6?
22. Identify and explain two (2) harmful effects of acid precipitation.
23. What are three (3) things that both Ontario and Canada have done to reduce the amount of acid
precipitation?