Living Energy

Students will be able toExplain how sun provides energyCreate/read food webs/pyramid

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Video

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Energy

All living things need energy!To carry out functions, make proteins…

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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