1. Chapter 6 Photosynthesis

2. autotroph  An organism that can make its own food  Includes plants, algae, some protists, and some bacteria

3. photosynthesis  The process of converting sunlight to chemical energy

4. Equation for photosynthesis Carbon dioxide + water yields glucose + oxygen

5. heterotroph  An organism that obtains its nutrition by eating other organisms

6. ATP  An energy storing molecule; stores chemical energy produced from photosynthesis Energy is released from ATP when a phosphate group is broken off.

7. chloroplast  A structure found in plants; where photosynthesis occurs

9. thylakoid  Membrane of grana where first stage of photosynthesis takes place; light energy is absorbed

10. grana  Structures in the chloroplast that are the site of photosynthesis; (a stack of thylakoids)

12. chlorophyll  A green pigment that absorbs certain wavelengths of light

13. pigment  Compounds that absorb light

14. carotenoid  Compounds that are accessory pigments (they help chlorophyll)  Absorb wavelengths of light that chlorophyll can’t  Produce yellow, orange and brown colors

15. stomata  Holes in plant leaves that take in CO2 and give off O2 and water

16. stroma  Solution in the space around the grana (pl.)  Granum (s.)

17. photosystem  Cluster of pigment molecules in thylakoid membrane