Aim: How can we describe the types of

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Presentation transcript:

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?

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!!!!!!

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

a. Photosynthesis Photo (light) synthesis (creating, making) -Light is the source of energy for the production of food. -“Who?” ex. Plants

Autotrophs:

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

Photosynthesis Chemosynthesis

Chemosynthetic nutrition - Deep sea tube worms and arthropod

So far….. Nutrition: Autotrophic: a. photosynthesis b. chemosynthesis Autotrophs – Organisms that can make their own food by photosynthesis or chemosynthesis.

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 protists called protozoa: amoeba, paramecium. Proto (first) zoa (animal, zoo)

Examples of heterotrophs paramecium

More heterotrophs….

Obviously, a _________________ . heterotroph!

Are you a heterotroph? Summary: 2 types of nutrition on Earth: 1. Autotrophic - photosynthesis - chemosynthesis 2. Heterotrophic

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