Respiration & Photosynthesis Comprehension Questions
Name:
Hour
Date Assignment is due:
On Wed Nov 23rd
Day of Week
Date:
Why late?
Date
by C. Kohn
Score:
If your project was late, describe why
Short Answers – 1 point each
1. Cells do not directly use sugar for energy. What does a cell use for its source of energy?
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2. What organelle is primarily used in respiration?
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3. What organelle is primarily used in photosynthesis?
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4. What is the ONLY thing that sunlight does during photosynthesis?
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5. What powers the splitting of H2O in Photosystem II?
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6. If PSII is light-dependent and the Calvin Cycle is light independent, what powers the Calvin Cycle?
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7. What is the ONLY role of oxygen in respiration?
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8. What are the waste products of respiration?
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9. What are the waste products of photosynthesis?
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10. Does oxygen play any role in photosynthesis? If so, list:
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Critical Thinking Questions – 2 pts each
1. What is the difference between Photosynthesis and Respiration?
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2. How are photosynthesis and respiration similar?
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3. What are the 2 main parts of a chloroplast organelle? What happens in each of these parts?
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4. How is chlorophyll different from a chloroplast? What does chlorophyll do during photosynthesis?
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5. Why is it necessary to split a water molecule into H+ and O2 during Photosystem II?
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6. Why is Photosystem II called a “light-dependent reaction”?
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7. What is ATP Synthase? How does it relate to each of the following: hydrogen, ATP, ADP & Pi
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8. Where does the hydrogen that powers ATP Synthase in photosynthesis come from? Where does the hydrogen
that powers ATP Synthase in respiration come from?
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9. Why is it necessary to produce ATP in two different places (chloroplast and the mitochondria)? What is the ATP
produced in photosynthesis is used for? What is the ATP produced during respiration is used for?
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10. Why must hydrogen from the mitochondria be removed by oxygen? What would happen if it wasn’t removed?
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11. Why isn’t oxygen needed to remove hydrogen from the chloroplasts?
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12. What is Rubisco? What is it used for? How does it interact with CO2?
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13. What is G3P? Why is it needed by plants?
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14. What powers the combination of Rubisco and CO2 into a G3P and then a sugar molecule?
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