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Photosynthesis and Cellular Respiration (An Introduction)
Photosynthesis and Cellular Respiration (An Introduction)
Photosynthesis and Cellular Respiration (An Introduction)
Photosynthesis and Cellular Respiration (An Introduction)
Photosynthesis and Cellular Respiration (An Introduction)
Photosynthesis and Cellular Respiration (An Introduction)
Photosynthesis and Cellular Respiration (An Introduction)
Photosynthesis and Cellular Respiration (An Introduction)
Photosynthesis and Cellular Respiration (An Introduction)
Photosynthesis and Cellular Respiration (An Introduction)
Photosynthesis and Cellular Respiration (An Introduction)
Photosynthesis and Cellular Respiration (An Introduction)
Photosynthesis and Cellular Respiration (An Introduction)
Photosynthesis and Cellular Respiration (An Introduction)
Photosynthesis and Cellular Respiration (An Introduction)
Photosynthesis and Cellular Respiration (An Introduction)
Photosynthesis and Cellular Respiration (An Introduction)
Photosynthesis and Cellular Respiration (An Introduction)
Photosynthesis and Cellular Respiration (An Introduction)
Photosynthesis and Cellular Respiration (An Introduction)
Photosynthesis and Cellular Respiration (An Introduction)
Photosynthesis and Cellular Respiration (An Introduction)
Photosynthesis and Cellular Respiration (An Introduction)
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Photosynthesis and Cellular Respiration (An Introduction)

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  • 1.  
  • 2. Agenda – Monday Oct. 24, 2011 Warm-Up (Metabolism, ATP, Thermodynamics): Lesson (Photosynthesis and Cellular Respiration): Wrap-Up (Lesson Review/EOC questions): Any Remaining Class Time is devoted to A-PLUS ONLY!! (No leaving class; No sleeping!!)
  • 3. Today’s Objectives <ul><li>I will compare and contrast photosynthesis and cellular respiration </li></ul><ul><li>I will define and classify two types of metabolism: photosynthesis and cellular respiration </li></ul>
  • 4. Warm-Up <ul><li>Define metabolism and name two important types of metabolism. </li></ul>
  • 5. Metabolism – all of the chemical reactions in a cell Cellular Energy <ul><li>Photosynthesis — light energy from the Sun is converted to chemical energy for use by the cell </li></ul><ul><li>Cellular respiration — organic molecules are broken down to release energy for use by the cell </li></ul>Chapter 8
  • 6. Warm-Up <ul><li>Which law of thermodynamics describes how energy is c onserved (not created or destroyed)? </li></ul>
  • 7. Laws of Thermodynamics <ul><li>First law — energy cannot be created nor destroyed. </li></ul><ul><ul><li>Derived from the law of conservation of energy . </li></ul></ul>Cellular Energy <ul><li>Second law — energy cannot be converted without the loss of usable energy. </li></ul><ul><ul><li>Example: When consumers convert chemical energy into kinetic energy, some energy is loss as heat to the environment but NOT destroyed. </li></ul></ul>Chapter 8
  • 8. Warm-Up <ul><li>What is ATP and how is used to create energy? </li></ul>
  • 9. ATP: The Unit of Cellular Energy <ul><li>ATP (Adenosine Triphosphate) </li></ul><ul><ul><li>has usable energy stored in the phosphate tail </li></ul></ul><ul><ul><li>releases energy when the bond between the second and third phosphate groups is broken </li></ul></ul>Cellular Energy Chapter 8
  • 10. <ul><li>Photosynthesis = process by which producers use the energy of the sun to make food </li></ul><ul><li>Stores energy in chemical bonds </li></ul><ul><ul><li>sunlight (radiant energy) is converted to chemical energy </li></ul></ul><ul><li>Occurs in the chloroplasts </li></ul>Cellular Energy Photosynthesis Chapter 8
  • 11. <ul><li>Carbon dioxide and water are the reactants </li></ul><ul><li>Glucose and oxygen are the products </li></ul>Cellular Energy Photosynthesis Chapter 8 The Chemical Reaction <ul><li>Carbon Dioxide + Water  Glucose + Oxygen </li></ul>
  • 12. Two Phases of Photosynthesis <ul><li>Light-Dependent Reactions </li></ul>Cellular Energy <ul><li>Light-Independent Reactions or Dark Reactions </li></ul>Photosynthesis Chapter 8
  • 13. Light Dependent Reactions <ul><li>Chlorophyll is the green pigment in plants </li></ul>Cellular Energy Photosynthesis Chapter 8 <ul><li>What happens: </li></ul><ul><ul><li>Cholorophyll absorbs light energy from the sun </li></ul></ul><ul><ul><li>Light energy energizes or excites electrons in chlorophyll </li></ul></ul><ul><ul><li>Enzymes transfer the energized (excited) electrons to ATP </li></ul></ul>
  • 14. Light Independent Reactions <ul><li>These are also called the Dark Reactions </li></ul>Cellular Energy Photosynthesis Chapter 8 <ul><li>What happens: </li></ul><ul><ul><li>ATP from the light-dependent reactions is used to convert water and carbon dioxide into glucose and oxygen </li></ul></ul>
  • 15. Cellular Respiration Cellular Energy Chapter 8 <ul><li>Cellular Respiration = process by which consumers obtain energy from the chemical bonds in food </li></ul><ul><li>Chemical bonds (found in organic molecules like sugar) are broken down to release energy (ATP) </li></ul><ul><ul><li>Chemical energy is converted to kinetic energy and heat </li></ul></ul><ul><li>Occurs in the mitochondria </li></ul>
  • 16. The Chemical Reaction Cellular Respiration Cellular Energy Chapter 8 <ul><li>The reverse of photosynthesis </li></ul><ul><li>Glucose and oxygen are the reactants </li></ul><ul><li>Carbon Dioxide and Water are the products </li></ul><ul><li>Glucose + Oxygen  Carbon Dioxide + Water + Energy </li></ul>
  • 17. Comparing Photosynthesis and Cellular Respiration Cellular Energy Chapter 8 Process Reactants Products Energy Involved Photosynthesis carbon dioxide, water glucose, oxygen input of radiant energy (sunlight) Cellular Respiration glucose, oxygen carbon dioxide, water release of chemical energy (ATP)
  • 18. Wrap-Up
  • 19. <ul><li>photosynthesis </li></ul><ul><li>cellular respiration </li></ul><ul><li>homeostasis </li></ul><ul><li>fermentation </li></ul>In which metabolic process are molecules broken down to produce carbon dioxide and water? Cellular Energy Wrap-Up (Oct. 24) Chapter 8
  • 20. <ul><li>chloroplasts </li></ul><ul><li>Golgi apparatus </li></ul><ul><li>mitochondria </li></ul><ul><li>vacuoles </li></ul>Where in the plant cell does photosynthesis take place? Cellular Energy Wrap-Up (Oct. 24) Chapter 8
  • 21. <ul><li>to make ATP </li></ul><ul><li>to process H 2 O </li></ul><ul><li>to store glucose </li></ul><ul><li>to deliver oxygen </li></ul>What is the overall purpose of cellular respiration? Cellular Energy Wrap-Up (Oct. 24) Chapter 8
  • 22. Which metabolic process is photosynthesis? Cellular Energy Wrap-Up (Oct. 24) Chapter 8 A B
  • 23. <ul><li>glucose </li></ul><ul><li>oxygen </li></ul><ul><li>chlorophyll </li></ul><ul><li>carbon </li></ul>Photosynthesis converts light energy to stored chemical energy. What form of chemical energy is used in cellular respiration? Cellular Energy Wrap-Up (Oct. 24) Chapter 8

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