1. Photosynthesis And Cellular Respiration

2. Photosynthesis  Process where plants and other organisms use the sun’s energy to convert carbon dioxide and water into oxygen and sugars.

3. How Is It Done?  Water enters through the roots and stomata.  Carbon dioxide enters through the stomata.  Chlorophyll in the chloroplasts is needed.

4. Two Stages  Chlorophyll collects the sun’s energy.  Water & carbon dioxide combine to make sugar and oxygen.

5. The equation

6. Cellular Respiration  Cells break down simple sugars (glucose) and release the energy. –Stored energy comes from our food. –Done in all living things.

7. Two Ways to Get Energy  Cellular respiration –Uses oxygen. –Mitochondria.  Fermentation –Without oxygen. –Done in your muscles (lactic acid) & yeast/bacteria.

8. Two Stages  Sugar is broken down in the cytoplasm.  ATP is released in the mitochondria

9. The Equation

10. Photosynthesis & Respiration are opposite reactions.