OCR-B4 04 energy from the sun

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B4-04 energy from the sun

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OCR-B4 04 energy from the sun

  1. 1. IB4.4.4 Energy from the Sun Energy from the Sundescribe the process of photosynthesisexplain how energy made available in photosynthesis is usedto make larger moleculesrelate cell structures to processes involved in photosynthesisH: recall the photosynthesis formulae Keywords- photosynthesis, chemical reaction, chloroplasts, chlorophyll II, glucose, starch grains, cellulose, vacuole, cell wall, cell membrane, nucleus, cytoplasm © Oxford University Press 2011
  2. 2. IB4.4.4 Energy from the Sun What is photosynthesis??Photosynthesis is one of the processes of life.It is catalysed by enzymes and takes place inside plantcells and some microorganisms such as phytoplankton.These cells have specialised structures to carry outphotosynthesis.Glucose made in photosynthesis is made into othermolecules. © Oxford University Press 2011
  3. 3. IB4.4.4 Energy from the SunLife on Earth is powered by the Sun. © Oxford University Press 2011
  4. 4. IB4.4.4 Energy from the Sun © Oxford University Press 2011
  5. 5. IB4.4.4 Energy from the Sun © Oxford University Press 2011
  6. 6. IB4.4.4 Energy from the Sun © Oxford University Press 2011
  7. 7. IB4.4.4 Energy from the Sun © Oxford University Press 2011
  8. 8. IB4.4.4 Energy from the Sun © Oxford University Press 2011
  9. 9. IB4.4.4 Energy from the Sun © Oxford University Press 2011
  10. 10. IB4.4.4 Energy from the Sun © Oxford University Press 2011
  11. 11. IB4.4.4 Energy from the SunLight from the Sun takes 8 minutes to reach the Earth.A green plant takes only a few seconds to capture partof this energy and store it as chemical energy, in aprocess called photosynthesis.The word equation for photosynthesis is: light energycarbon dioxide + water glucose + oxygen chlorophyll © Oxford University Press 2011
  12. 12. IB4.4.4 Energy from the SunOn land, tropical rainforests capture more energy thanany other ecosystem. © Oxford University Press 2011
  13. 13. IB4.4.4 Energy from the SunPhotosynthesis also happens in the oceans.Around half the light energy living things use isharvested by phytoplankton. © Oxford University Press 2011
  14. 14. IB4.4.4 Energy from the SunThe red and green areas show most phytoplanktongrowing around continental shelves. © Oxford University Press 2011
  15. 15. IB4.4.4 Energy from the Sun Activity AB4.4.1 Collecting evidenceWatch the demonstration and considerthe answers to questions 6-10 on theworksheet-you should answer the questionsthrough the discussion anddemonstration © Oxford University Press 2011
  16. 16. IB4.4.4 Energy from the SunWatch the video and take some notesHow does this video show thatphotosynthesis is taking place? http://www.youtube.com/watch?v=yBfx3OcXS6A © Oxford University Press 2011
  17. 17. IB4.4.4 Energy from the Sun Textbook Section Ddescribe the routes for glucose molecules synthesised during photosynthesis.Activity AB4.4.3 How plants use glucose Can be completed using the text book. © Oxford University Press 2011
  18. 18. IB4.4.4 Energy from the Sun © Oxford University Press 2011
  19. 19. IB4.4.4 Energy from the Sun © Oxford University Press 2011
  20. 20. IB4.4.4 Energy from the Sun HomeworkCreate a mind map from the notes madein the lesson that starts with the wordphotosynthesis in the middle of the page.The map should show your knowledge ofphotosynthesisIn for next lesson © Oxford University Press 2011

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