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OCR-B4 04 energy from the sun
- 1. IB4.4.4 Energy from the Sun Energy from the Sun describe the process of photosynthesis explain how energy made available in photosynthesis is used to make larger molecules relate cell structures to processes involved in photosynthesis H: 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. 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 plant cells and some microorganisms such as phytoplankton. These cells have specialised structures to carry out photosynthesis. Glucose made in photosynthesis is made into other molecules. © Oxford University Press 2011
- 3. IB4.4.4 Energy from the Sun Life on Earth is powered by the Sun. © Oxford University Press 2011
- 4. IB4.4.4 Energy from the Sun © Oxford University Press 2011
- 5. IB4.4.4 Energy from the Sun © Oxford University Press 2011
- 6. IB4.4.4 Energy from the Sun © Oxford University Press 2011
- 7. IB4.4.4 Energy from the Sun © Oxford University Press 2011
- 8. IB4.4.4 Energy from the Sun © Oxford University Press 2011
- 9. IB4.4.4 Energy from the Sun © Oxford University Press 2011
- 10. IB4.4.4 Energy from the Sun © Oxford University Press 2011
- 11. IB4.4.4 Energy from the Sun Light from the Sun takes 8 minutes to reach the Earth. A green plant takes only a few seconds to capture part of this energy and store it as chemical energy, in a process called photosynthesis. The word equation for photosynthesis is: light energy carbon dioxide + water glucose + oxygen chlorophyll © Oxford University Press 2011
- 12. IB4.4.4 Energy from the Sun On land, tropical rainforests capture more energy than any other ecosystem. © Oxford University Press 2011
- 13. IB4.4.4 Energy from the Sun Photosynthesis also happens in the oceans. Around half the light energy living things use is harvested by phytoplankton. © Oxford University Press 2011
- 14. IB4.4.4 Energy from the Sun The red and green areas show most phytoplankton growing around continental shelves. © Oxford University Press 2011
- 15. IB4.4.4 Energy from the Sun Activity AB4.4.1 Collecting evidence Watch the demonstration and consider the answers to questions 6-10 on the worksheet- you should answer the questions through the discussion and demonstration © Oxford University Press 2011
- 16. IB4.4.4 Energy from the Sun Watch the video and take some notes How does this video show that photosynthesis is taking place? http://www.youtube.com/watch?v=yBfx3OcXS6A © Oxford University Press 2011
- 17. IB4.4.4 Energy from the Sun Textbook Section D describe 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. IB4.4.4 Energy from the Sun © Oxford University Press 2011
- 19. IB4.4.4 Energy from the Sun © Oxford University Press 2011
- 20. IB4.4.4 Energy from the Sun Homework Create a mind map from the notes made in the lesson that starts with the word photosynthesis in the middle of the page. The map should show your knowledge of photosynthesis In for next lesson © Oxford University Press 2011
Editor's Notes
- A temperature map of the Sun's corona as recorded by the EIT instrument on SOHO
- Until now, scientists have only had a continuous record of photosynthesis on land. But following three years of continual data collected by the SeaWiFS instrument, NASA has gathered the first record of photosynthetic productivity in the oceans. By taking three years of continuous data as a whole, experts have been able to map trends and anomalies in the global circulation of carbon to a degree of detail than has never been done before. It is a baseline measurement to by which all future measurements will be compared. The SeaWiFS instrument looks at the world oceans and land to observe the plant life and phytoplankton.