Living Energy
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Transcript of Living Energy
Living Energy
Students will be able toExplain how sun provides energyCreate/read food webs/pyramid
Page 44
Video
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• <a href="http://www.metacafe.com/watch/304161/food_chain/">Food Chain - video powered by Metacafe</a></font>
Energy
All living things need energy!To carry out functions, make proteins…
44
Sources of Energy
Most life on the planet depends on the sun!
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Exception
Deep Ocean VentsLive off of chemicals (sulfur) from eruptions inside Earth
Sources of Energy
Cell produces its own energy – AutotrophSunlight – Photoautotroph (plants)Chemicals – Chemoautotroph (bacteria)
Cells that must consume others - Heterotroph
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Energy Units
calorie = Unit of energyRaise 1 gram of water 1°C
Food calories = Calorie (1,000 cal)
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Types of animals
Producer – Makes its own foodPrimary Consumer – Eats a producer (Herbivore)Secondary Consumer – Eats primary (Carnivore)Tertiary Consumer – Eats Secondary (Top pred.)Omnivore - Eats plants and animalsDecomposer – Breaks down body to release
chemicals back to plants
Food Chains
Simple pattern of whom eats whomArrows follow the energy
Food Webs
Reality is much more complicated “Web”
Food Web Pyramid