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Cell Energy Photosynthesis

Cell Energy Photosynthesis. What do you know about photosynthesis?. Answer the true/false questions using your prior knowledge about photosynthesis. ____ 1. Photosynthesis is important because it uses excess oxygen in the atmosphere. F. ____ 2. Photosynthesis creates energy. F.

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Cell Energy Photosynthesis

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  1. Cell EnergyPhotosynthesis

  2. What do you know about photosynthesis? • Answer the true/false questions using your prior knowledge about photosynthesis.

  3. ____ 1. Photosynthesisis important because it uses excess oxygen in the atmosphere. F

  4. ____ 2. Photosynthesis creates energy. F

  5. ____ 3. Photosynthesis stores energy in the bonds of glucose. T

  6. ____ 4. Water is a necessary ingredient for photosynthesis. T

  7. ____ 5. Carbon dioxide is produced by photosynthesis. F

  8. ____ 6. The gasoline used to drive to school today is ultimately the result of photosynthesis. T

  9. ____ 7. Chlorophyll, contained in the mitochondria, traps light energy for photosynthesis. F

  10. Photosynthetic organisms are producers. Producers (autotroph) make their own source of chemical energy. Plants use photosynthesis and are producers. Photosynthesis captures energy from sunlight to make sugars.

  11. Photosynthesis • …the process through which plants convert light energy to chemical energy in order to produce food • The energy involved in photosynthesis is stored in the chemical bonds of carbohydrates.

  12. Photosynthesis Equation H2O + CO2 C6H1206 +O2 (water) + (carbon dioxide)  (glucose) + (oxygen) A balanced equation… 6H2O + 6CO2C6H12O6 + 6O2

  13. Chloroplast • Located inside leaf cells • Capsule-shaped organelle • Contained by two membranes

  14. Photosynthesis in plants occurs in chloroplasts. Photosynthesis takes place in two parts of chloroplasts. grana (thylakoids) stroma grana (thylakoids) chloroplast stroma

  15. Chloroplast Parts • Thylakoids: disk-shaped vesicles stacked inside the chloroplast • Granum: a stack of thylakoids • Stroma: liquid material inside the chloroplast • Chlorophyll: pigment located inside the thylakoid; gives plants their green color

  16. Photosynthesis • 2 parts of photosynthesis – light dependent and light independent • Light dependent uses sunlight to make ATP • Light independent uses that ATP to make Glucose (CALVIN CYCLE)

  17. The light-dependent reactions capture energy from sunlight. • take place in thylakoids • water and sunlight are needed • chlorophyll absorbs energy • energy is transferred along thylakoid membrane then to light-independent reactions • oxygen is released

  18. Light Dependent

  19. The light-independent reactions make sugars. • take place in stroma • needs carbon dioxide from atmosphere • use energy to build a sugar in a cycle of chemical reactions

  20. Light Independent

  21. The equation for the overall process is: 6CO2 + 6H2O  C6H12O6 + 6O2 granum (stack of thylakoids) 1 chloroplast sunlight 6H2O 6O2 2 energy thylakoid stroma (fluid outside the thylakoids) 6CO2 1 six-carbon sugar C6H12O6 3 4

  22. Photosynthesis (the basics) • http://www.youtube.com/watch?v=-5F2NcYqWr4 • http://www.youtube.com/watch?v=mpPwmvtDjWw

  23. Light Dependent • http://www.youtube.com/watch?v=HrMka8vj73U • http://www.youtube.com/watch?v=eY1ReqiYwYs

  24. Calvin Cycle • http://www.youtube.com/watch?v=E_XQR800AgM

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