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The Vital Role of Prokaryotes: Archaea and Bacteria in Ecosystems

Prokaryotes, including the domains Archaea and Bacteria, are essential for life on Earth. Archaea, unique for their lack of peptidoglycan cell walls, thrive in extreme environments and reproduce asexually, often using bacteriorhodopsin to convert sunlight into energy. Bacteria, characterized by peptidoglycan walls, reproduce through binary fission and play crucial roles in processes such as digestion and nitrogen fixation. These microorganisms contribute to nutrient cycling in soil and form the foundation of the food chain, ensuring ecosystem stability even in harsh conditions.

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The Vital Role of Prokaryotes: Archaea and Bacteria in Ecosystems

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  1. The Eminent Domain

  2. Domain Archaea -1 cell prokaryote -Have different cell walls than bacteria -Lack peptidoglycan cell walls -Reproduce asexually -Live in extreme environments -Some eat by producing bacteriorhodopsin, which allows them to convert sunlight into ATP, which provides energy. Genus OxytrichaPediastrum Duplex

  3. Domain Bacteria -1 cell prokaryote -Reproduce by binary fission -Have peptidoglycan cell walls -Break down food products in people -Have been present for ¾ of Earth’s life Cyanobacteria Escherchia Coli

  4. Why are we important? -Without prokaryotes, you wouldn’t be able to digest -Helps with nitrogen fixation, without which life would be impossible. -Make nutrients for soil that allow things to grow. -Beginning of the food chain

  5. What happens if Earth becomes inhabitable? Prokaryotes like Archaea will still be on the ocean floor, still alive and thriving.

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