1. Photosynthesis

2. Autotrophs and Heterotrophs Autotrophs are organisms that make their own food Heterotrophs are organisms that need to ingest food to obtain energy

3. How are they related??

5. Autotrophs

6. Photosynthesis How plants (and some other organisms) use light to convert water and carbon dioxide into oxygen and sugar!

7. Happens here = chloroplast

8. Leaf Plant Cell chloropl ast

9. Chloroplasts have chlorophyll (pigment) This is why chloroplasts are green, why leaves are green

10. Chloroplast Lumen (inside thylakoid) Outer membrane intermembrane space Inner membrane Stroma thlakoid grana

11. Photosynthesis Photosystem II Photosystem I In thylakoid membrane (aka… The Calvin Cycle) In stroma

13. 2 Photosystems in thylakoid

14. In thylakoid membrane P680 photons P680 ETR ATP P700 ETR ATP Photosystem IIPhotosystem I NADPH

16. NOTE…… Electron Carriers are NADP …… b/c can become NADPH

17. Hydrogen ions flow through a channel in the thylakoid membrane ATP synthase attached to the channel makes ATP How ATP made in light rxn?