Photosynthesis Web Tutorial
Go to: http://bcs.whfreeman.com/phelan1e/default.asp#498639__499833__
(2 underscores before and after the last sequence of numbers.
You can either use your own headphones or you will need to remember to turn
on the subtitles in each segment. Between segments you will have to click
“photosynthesis” just over the box where the animation is showing.
Photosynthesis: The Big Picture
1. Where does a plant get each of the following?
Carbon dioxide:
Energy:
Water and chemicals:
2. What is a by-product of photosynthesis that we need to live?
3. What happens in the “photo” reaction of photosynthesis?
4. What happens in the “synthesis” reaction of photosynthesis?
5. What is the overall equation for photosynthesis (use Glucose, C6H12O6 as
the sugar)?
Photosynthesis: The “Photo” Reactions
6. What is the stroma?
7. What are thylakoids?
8. Where do the “photo”reactions take place?
9. Where does the synthesis reaction take place?
10. What is a photosystem?
11. The other chlorophylls in the photosystem (not the chlorophyll a) gain
energy and their electrons are excited. What do they do with the energy that
results when those electrons fall again?
12. What happens to the e- from chlorophyll a that gets excited?
13. Where do replacement electrons for chlorophyll a come from?
14. When water is split, is it being oxidized or reduced?
15. What is released when water is split?
16. Where does the primary electron acceptor send the electrons?
17. When the electrons pass through the electron transport chain what do the
proteins use the energy to do?
18. At the end of the electron transport chain where do the electrons go?
19. Where are H+ ions being concentrated?
20. What is produced by the protein that lets H+ ions flow back into the
stroma?
21. In the photosystem that comes next, where does the e- its chlorophyll a
loses get replaced from?
22. What is reduced at the end of the second ETC?
23. What 2 products of the “photo” reactions are used in the “synthesis”
reactions?
24. What is the role of water in photosynthesis?
25. What do plants do with their mitochondria?
Photosynthesis: The “Synthesis” Reactions
26. What is the other name for the “Synthesis” reactions?
27. What are the inputs of the “synthesis” reactions?
28. What is the most abundant protein on the planet?
29. What is the job of rubisco?
30. What does the phrase “fix carbon” mean?
31. What 2 molecules are used in the “sugar creation” step?
32. What molecule is created in the “sugar creation” step?
33. G3P has two roles. What 2 things can G3P be used to make?
34. Why is the Calvin Cycle called a cycle?
35. Why does feeding sugar to cut flowers keep them alive longer?