1. Welcome To
Science Challenge

2. Today's
Topics
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3. Photosynthesis
And
Cellular Respiration
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4. IPS Challenge 5 10 15 20 25 15 25 5 10 20 5 25 10 15 20 5 25 10 15 20 20 5 10 15 25
Player Scores
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5. Which are the raw materials of photosynthesis?
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6. Carbon Dioxide and water
Answer for 5 Points
Carbon Dioxide and water
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7. One sugar produced by photosynthesis is _______.
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8. Answer for 5 Points
glucose
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9. What was the experimental control in the plants and snail lab?
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10. Test Tube D containing only bromythmol blue solution only
Answer for 5 Points
Test Tube D containing only bromythmol blue solution only
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11. What is the source of energy used in photosynthesis?
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12. Answer for 5 Points Sunlight
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13. What is the source of energy used in cellular respiration?
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14. Answer for 5 Points
Glucose
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15. What are two products of photosynthesis?
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16. Answer for 10 Points
Glucose and Oxygen
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17. What is the source of energy for nearly all life on Earth?
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18. Answer for 10 Points
The Sun
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19. What products of cellular respiration are the starting materials for photosynthesis?
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20. Carbon Dioxide and Water
Answer for 10 Points
Carbon Dioxide and Water
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21. Photosynthesis takes place in organelles called _________.
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22. Answer for 10 Points
Chloroplasts
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23. What organelle is called the power house of the cell and why?
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24. Answer for 10 Points
Mitochondria because that is where the 2nd stage of cellular respiration takes place which releases a lot of energy.
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25. What is the main purpose of photosynthesis?
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26. Answer for 15 Points To make food/glucose
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27. What is the main purpose of cellular respiration?
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28. To produce energy for cell/life functions
Answer for 15 Points
To produce energy for cell/life functions
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29. The two tubes contain bromthymol blue. The lights are off
The two tubes contain bromthymol blue. The lights are off. After 24 hours, what will the color of the water be in tube C?
A. Green (it won't change)
B. Yellow
C. Blue
D. Colorless (clear)
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30. Answer for 15 Points
Correct Answer: B — Yellow Explanation: Plants take in oxygen and release carbon dioxide constantly, just as animals do. They also do the opposite - taking in carbon dioxide and releasing oxygen - through the process of photosynthesis, but ONLY when the lights are on. With the lights off, the Elodea sprigs will be releasing carbon dioxide into the water, which will cause the bromthymol blue solution to turn yellow.
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31. What is the difference between an independent and dependent variable
What is the difference between an independent and dependent variable? Give an example from the plants and snail gizmo.
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32. Answer for 15 Points
Independent variable is what the experimenter changes and dependent variable is what the experimenter measures.
Example= Changing what is inside the test tubes-plants, snails, number of organisms, or lights on/off is the independent variable.
While measuring the carbon dioxide and oxygen levels along with the bromthymol blue solution is the dependent variable.
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33. The two tubes contain bromthymol blue
The two tubes contain bromthymol blue. After 24 hours, what will the color of the water be in tube B?
A. Green (it won't change)
B. Yellow
C. Blue
D. Colorless (clear)
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34. Answer for 15 Points
Correct Answer: B — Yellow Explanation: The snails will be producing carbon dioxide no matter whether the lights are on or off. Carbon dioxide makes bromthymol blue turn yellow.
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35. Describe what occurs during photosynthesis?
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36. Answer for 20 Points
During photosynthesis, plants absorb energy from the sun and use the energy to convert carbon dioxide and water into sugars and oxygen.
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37. Describe what occurs during cellular respiration?
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38. Answer for 20 Points
During cellular respiration, cells from all organisms break down glucose and other molecules from food in the presence of oxygen, releasing energy.
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39. Does your body get all its energy from the sun? Explain.
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40. Answer for 20 Points
Yes, all of the energy I get comes from the sun. I eat plants which capture light energy from the sun to make food. The energy in animals I eat comes from plants, which in turn get energy from the sun.
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41. Could cellular respiration happen without photosynthesis
Could cellular respiration happen without photosynthesis? Explain your reasoning.
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42. Answer for 20 Points
No. The starting materials of cellular respiration are the products of photosynthesis. Without photosynthesis, there wouldn’t be any oxygen or glucose for cellular respiration.
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43. Plants cells produce their own food
Plants cells produce their own food. They also need energy from the food, which they use for cell activities, growth, and reproduction. What is the name of the process in which plant cells use oxygen to get energy?
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44. Answer for 20 Points Cellular Respiration
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45. When do cells carry out respiration and why?
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46. Answer for 25 Points
All the time because cells need a constant supply of energy to carry on all the processes necessary for survival.
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47. Why are cellular respiration and photosynthesis opposite processes?
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48. Answer for 25 Points
Cellular respiration and photosynthesis are opposite processes because the raw materials of photosynthesis are the products of cellular respiration, and the products of photosynthesis are the raw materials of cellular respiration
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49. How does the mass of the products of respiration compare with the mass of the reactants? How do you know?
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50. Answer for 25 Points
The mass of reactants is equal to the mass of the products. Due to conservation of mass the number of atoms of each element does not change, they are only rearranged.
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51. What is the chemical equation for Photosynthesis?
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52. Answer for 25 Points 6CO2 + 6H2O  C6H12O6 + 6O2 Light Energy
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53. What is the chemical equation for Cellular Respiration?
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54. C6H12O6 + 6O26CO2 + 6H2O +
Answer for 25 Points
Energy
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55. University of North Carolina at Wilmington All rights reserved.
Authored by
Jeff Ertzberger
University of North Carolina at Wilmington All rights reserved.
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