1. Photosynthesis and Cellular Respiration

2. Photosynthesis  The process in which organisms use water along with sunlight and carbon dioxide to make food

3. What performs photosynthesis?  Autotrophs -an organism that can “make” its own food  Examples of Autotrophs include: Algae -a simple nonflowering plant that is often unicellular Phytoplankton -microscopic plants that drift or float in the sea or in fresh water And of course…. PLANTS !

4. How does photosynthesis work? INPUTS  Sunlight- absorbed by chlorophyll  6 Water Molecules  6 Carbon Dioxide Molecules

5. How does photosynthesis work? OUTPUTS  1 molecule of Glucose  6 molecules of O 2

6. All together: Are both sides even for each element? + + =

7. Written and Chemical Formula for Photosynthesis  Carbon dioxide + water+ sunlight  glucose +oxygen  6CO 2 + 6H 2 0 + sunlight  C 6 H 12 O 6 + 6O 2

8. Cellular Respiration  How glucose (a simple sugar) is broken down in the mitochondria for energy  Cellular Respiration occurs after photosynthesis  Powerhouse-Mitochondria break things down, like our digestive system

9. If we already have glucose, why do we need cellular respiration?  Glucose has to be broken down into ATP: an energy source that plants and humans can use  Glucose is stored until it’s needed!

10. Written and Chemical Formula for Cellular Respiration  Glucose + Oxygen  Carbon Dioxide + Water + Energy (ATP)  C 6 H 12 O 6 + 6O 2  6CO 2 + 6H 2 O + ENERGY (ATP)

11. Cellular Respiration: in plants and animals

12. Photosynthesis and Cellular Respiration  Photosynthesis releases oxygen into the air so we all can survive  Photosynthesis also gives us glucose when we eat a plant  This energy is then turned into a usable form through cellular respiration

13. Photosynthesis and Cellular Respiration  http://w ww.yout ube.com /watch? v=JUmT2 4R8CyA http://w ww.yout ube.com /watch? v=JUmT2 4R8CyA