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Understanding Nature's Recyclers: The Roles of Bacteria, Producers, and Consumers

Explore the vital roles of autotrophs, heterotrophs, and decomposers in our ecosystem. Autotrophs, like plants and chemosynthetic bacteria, produce their own food through photosynthesis or chemosynthesis. Heterotrophs, including animals, rely on consuming other organisms for energy. Decomposers like bacteria and fungi break down waste and dead matter, recycling nutrients back into the environment. This overview also highlights the beneficial and harmful aspects of bacteria, from aiding in digestion to causing diseases, emphasizing their significance in the food web.

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Understanding Nature's Recyclers: The Roles of Bacteria, Producers, and Consumers

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  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

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

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