Activity 80

1. Activity 80 Nature’s Recyclers

2. Producer (autotroph) • Produce their own food using sunlight (photosynthesis) or chemicals (chemosynthetic). • Ex. Plant, chemosynthetic bacteria

3. Consumer (heterotroph) • Can not produce their own food and must eat other organisms to get their energy. • Ex. Animal

4. Decomposer • A type of consumer (heterotroph) that breaks down waste and dead organisms. • Ex. Bacteria, Fungi, Worms

5. Bacteria • Smallest and simplest living things, no nucleus • First form of life on Earth • Reproduce by binary fission • Can survive for millions of years by forming a protein coat called an endospore. • Can be producers or consumers( decomposers or parasites).

6. Bacteria have 3 shapes • Bacilli or rod shaped • Cocci or spherical • Spirilla or spiral shaped

7. Two Kingdoms • 1 Archaebacteria- primitive and live in extreme environments. • 2. Eubacteria – most bacteria.

8. Pair/ Share • With your elbow partner, come up with 3 ways bacteria can be helpful and 3 ways it can be harmful.

9. Helpful Bacteria • Nitrogen fixing bacteria change N2 in the air into a form that plants can use. • Return nutrients back into environment by decomposition. • Bioremediation- some bacteria can beak down harmful pollutants into harmless chemicals.

10. Helpful Bacteria (continued) • Genetically engineered bacteria are used to produce medicine like insulin, antibiotics. • Bacteria is used to make food like cheese, yogurt, sour cream… • Intestinal bacteria help digest food and absorb vitamins.

11. Important part of the food web

13. Harmful Bacteria • Pathogenic bacteria – can cause diseases in people, animals, plants, protists and fungi. • Spoils food. • Antibiotic resistant bacteria are on the rise.