Photosynthesis Topic Guide
Vocabulary:
*Stroma
*Thylakoid membrane
*Photosystem
*ATP
*Stomata
*Calvin Cycle
*Photorespiration
*Chlorophyll
*Xanthophyll
*Carotene
*Photosynthesis
*Electron transport chain
*NADPH
*Rubisco
*Grana
Video to watch:
Bozeman Biology Photosynthesis (12 minutes)
http://www.youtube.com/watch?v=g78utcLQrJ4
Alternate video (not mandatory):
Photosynthesis Crash Course Biology (13 minutes) http://www.youtube.com/watch?v=sQK3Yr4Sc_k
Always helpful prezi by David Knuffke over photosynthesis:
http://prezi.com/odmifdasxk6e/ap-bio-metabolism-3-photoautotrophic-nutrition/
Questions:
1. What organisms other than plants undergo photosynthesis?
2. Draw and label a chloroplast.
3. Where does the light reaction of photosynthesis take place?
4. Where is the site of the Calvin cycle (aka the light independent reaction)?
5. What are the two pigments of chlorophyll that are described?
6. How are the pigments xanthophyll and carotene different than the chlorophyll pigments?
7. What colors do the chlorophyll pigments absorb? What is the least useful color for plants?
8. Write down the chemical equation for photosynthesis.
9. How is the formula for cellular respiration different?
10. Describe briefly what happens during the light reaction (be general). What goes in and what
comes out?
11. Where does the energy produced during the light reaction go? What comes out of the Calvin
(light independent) reaction?
12. What is a photosystem?
13. What happens to water in photosystem II during the light dependent reaction? Where does
the O2 go?
14. What kind of charge builds up inside the thylakoid membrane?
15. How do the H+ ions leave the thylakoid membrane?
16. What three molecules is made through the light independent reactions?
17. Does the Calvin cycle need light to work?
18. What molecule starts the Calvin cycle?
19. ___________ is added to RuBP with the help of the enzyme ______________.
20. What can G3P become in the Calvin cycle?
21. What can shut down the Calvin cycle?
22. What is photorespiration?
23. What are C3 plants? Why is photorespiration bad?
24. Why was photorespiration not an issue initially?
25. Why might a plant run out of CO2?
26. What do CAM plants do to avoid photorespiration?
27. Give 3 examples of CAM plants (you may have to look this up!)
28. What do C4 plants do to avoid photorespiration?
29. Give 3 examples of C4 plants (you may have to look this up!)