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Aim: How can we describe the types of nutrition in living things?
Do now:
1. What is nutrition?
2. Why do living things need nutrition?
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Nutrition:
How an organism gets food (nutrients, organic compounds) and makes it available to the cells.
Nutrients: useful portion of food:
-sugar-amino acid-fat-starch
Organic Compounds = FOOD!!!!!!
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2 TYPES OF NUTRITION
1. Autotrophic nutrition – Auto (self) trophic (refers to feeding and nutrition) “Self feeding.” -Organisms that make their own organic compounds
ex. Photosynthesis Chemosynthesis
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a. Photosynthesis Photo (light) synthesis (creating, making) -Light is the source of energy for
the production of food. -“Who?”
ex. Plants
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Autotrophs:
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b. Chemosynthesis –Chemo (chemical)synthesis (creating, making)
-Chemical activity is the source of energy for the production of organic compounds. Who?
-organisms in environments that do not rely on the sun to make food.
ex. Deep sea organisms
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Photosynthesis Chemosynthesis
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Chemosynthetic nutrition - Deep sea tube worms and arthropod
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So far…..
Nutrition:1. Autotrophic:
a. photosynthesisb. chemosynthesis
Autotrophs – Organisms that can make their own food by photosynthesis or chemosynthesis.
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2. Heterotrophic nutrition –Hetero: other trophic: (refers to feeding and nutrition) “Fed by others.”- Heterotrophs: Organisms that eat organic compounds made by others.
ex. Animals or animal-like protistscalled protozoa: amoeba, paramecium.Proto (first) zoa (animal, zoo)
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Examples of heterotrophs
paramecium
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More heterotrophs….
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Obviously, a _________________ .heterotroph!
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Are you a heterotroph?
Summary: 2 types of nutrition on Earth:
1. Autotrophic - photosynthesis- chemosynthesis
2. Heterotrophic
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