why do we eat

why do we eat - Year 9 Science Food Type Use Carbohydrate...

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Year 9 Science
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Food Type Carbohydrate Fat Protein Sugars Use Long term energy Protecting organs and long term energy store Making muscle, enzymes, skin, hair Fast energy
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Food tests Food type Protein Sugar Fat Carbohydrate Test Biuret turns purple if protein is present Benedicts turns from blue to red/brown if sugar is present Greaseproof paper gets an oily residue Iodine turns blue/black if starch is present
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Carnivore Only eats meat E.g. Spider, lion Its survival is dependent on finding and catching prey Top predator – Nothing eats him!
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Carnivore Teeth Adaptation
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Herbivore Only eats plants E.g. Cow, aphid Depends on a large supply of plant matter. Longer gut as less energy available in their food.
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Herbivore Teeth Adaptation
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Omnivore Eats a mixture of plants and animals E.g. Pigs, humans Increased chance of survival as they are not restricted to one diet.
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Decomposers Breaks down and recycles dead material. E.g. Bacteria, fungi
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Primary Producers (Plants) Plants can make their own food using Sunlight Chlorophyll Water Carbon dioxide How are all the consumers and producers linked?
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Definitions Trophic level Producer Consumer – feeding group in food chain (eg Herbivore) – makes own food – eats other organisms for food
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Phytoplankton Zooplankton Fish Shark Label the trophic levels as herbivore, carnivore, producer,
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This note was uploaded on 11/11/2011 for the course PDBIO 220 taught by Professor Tomco during the Winter '09 term at BYU.

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why do we eat - Year 9 Science Food Type Use Carbohydrate...

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