1. Alternatives in carbon fixation Page 231-234
Photosynthesis
Alternatives in carbon fixation
Page

2. Problem with rubisco RuBisCO Is a carboxylase and an oxygenase
Can incorporate a carbon dioxide or an oxygen to RuBP
Problem with rubisco

3. Problem with rubisco

4. Photorespiration Incorporating oxygen into RuBP
Why does the plant do this?
Photorespiration

5. Rubisco Enzyme binds CO2 about 80x faster than it binds O2
Under normal atmospheric conditions, the Calvin cycle will occur 75% and photorespiration occurs 25% of the time
Rubisco

6. Stomata:
Microscopic pores
Leaf structure

7. Know the roles of:
Bundle sheath cell
Mesophyll cell
C4 plants

8. C4 Plants

9. Many tropical plants
Also crops like sugar and corn
C4 plants

10. Mainly plants that live in hot and arid conditions
CAM plants

11. CAM Plants