Successfully reported this slideshow.



Published on

Published in: Education, Technology, Business
  • Be the first to comment

  • Be the first to like this


  1. 1. The Process of Photosynthesis and Respiration<br />
  2. 2. Life Before Photosynthesis<br />Heterotrophs existed before autotrophs<br />Introduction of autotrophs<br />O2 and O3 released in atmosphere<br />O2 allowed for aerobic respiration and O3 blocked UV rays<br />
  3. 3. What is Photosynthesis?<br />CO2 + H2O Sugar + O2<br />Process that turns sun energy into sugar.<br />Carbon dioxide and water reacting with light:<br /> forms sugar molecules<br /> gives off oxygen<br />Occurs in chloroplasts<br />Light<br />
  4. 4. Where Does It Occur? <br />Mostly inside cells of the leaves.<br />Within organelles called chloroplast.<br />Chloroplast contain:<br />Chlorophyll & carotenoid pigments<br />Thykaloid membranes<br />Stroma<br />Outer & inner membranes<br />
  5. 5. Lumen<br /><br />
  6. 6. What are Chlorophyll and Carotenoids?<br />Pigments found in chloroplast that absorb light.<br />Chlorophyll:<br />Reflects green light<br />Green color of plants<br />Carotenoids:<br />Reflects red, orange, yellow light<br />Fall colors<br />
  7. 7. Inner and Outer Membrane<br />Outer membrane<br />Freely permeable to molecules. <br />Inner Membrane<br />Transporters regulate what goes in & out.<br />
  8. 8. Thylakoid Membranes<br />Membranes inside of chloroplast<br />Lumen: space inside thylakoid membranes<br />Granum: stacks of thylakoid membranes.<br />
  9. 9. Stroma<br />Space around thylakoid membranes<br />Connecting thylakoids are called stromatylakoids<br />
  10. 10. Lumen<br />
  11. 11. Photosynthesis Contains Two Parts:<br />Light Reactions<br />Light dependent reactions. <br />Calvin Cycle<br />Light independent reactions. <br />
  12. 12. Light Reactions<br />“Photo” part of photosynthesis<br />Converts light to useable energy source<br />Light energy and water to make energy <br />ATP and NADPH<br />Releases O2<br />Thylakoid membranes<br />
  13. 13. Calvin Cycle<br />“Synthesis” part of photosynthesis<br />“fixes carbon”<br />Uses CO2 to synthesize simple 3-carbon sugars<br />Uses ATP and NADPH from light reactions<br />Stroma<br />
  14. 14.<br />
  15. 15. Photosynthesis: Review!<br />Photosynthesis in equation and words.<br />Understand the parts of chloroplasts<br />Chlorophyll & carotenoids<br />Thylakoid<br />Stroma<br />Inner and outer membrane<br />Light Reactions and Calvin Cycle<br />
  16. 16. Works Cited<br />Raven, Peter. Biology of Plants. New York: W.H. Freeman and Co, 2005.<br />