Photosynthesis(2)

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Photosynthesis(2)

  1. 1. Photosynthesis
  2. 2. Autotrophic Organisms <ul><li>Autotrophic organisms can make their own food. </li></ul><ul><li>Most autotrophs do this by converting the sun’s energy into Chemical energy </li></ul><ul><li>This mostly occurs in the Chloroplasts of the cells of the organism. </li></ul>
  3. 3. Chloroplast <ul><li>Has a double membrane </li></ul><ul><li>Stroma: empty space inside a chloroplast </li></ul><ul><li>Granum: stacked structures where some reactions take place. </li></ul>
  4. 4. Chlorophyll <ul><li>Chlorophyll is the pigment inside a chloroplast that makes it green </li></ul><ul><li>It is also responsible for the conversion of light energy into chemical energy. </li></ul><ul><li>There are different types of chlorophyll, and other pigments responsible for photosynthesis. </li></ul>
  5. 5. Steps in Photosynthesis <ul><li>1st – Light Reactions </li></ul><ul><li>2 nd – Dark Reactions </li></ul>
  6. 6. Light Reactions <ul><li>Occur in the grana </li></ul><ul><li>This is where the light energy is used to split water and release Oxygen </li></ul>
  7. 7. Dark reactions <ul><li>Energy from the breakdown of water is used to make Glucose in a Calvin Cycle </li></ul>
  8. 9. How does a plant take in resources? <ul><li>Water is pulled in through the roots </li></ul><ul><li>Carbon dioxide can enter through holes in the underside of leaves called Stomates </li></ul>
  9. 10. Stomate
  10. 11. Equation for Photosynthesis <ul><li>H 2 O + CO 2  C 6 H 12 0 6 + O 2 </li></ul><ul><li>How does this relate to Respiration? </li></ul>

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