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Microbiology UTA 2460 Chapter 4 Already Rated A+

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Microbiology UTA 2460 Chapter 4 Already Rated A+ ### Prokaryotes Overview - Definition: Prokaryotes are single-celled organisms that lack a nucleus and membrane-bound organelles. They are classified into two domains: - Bacteria - Archaea ### Habitat and Characteristics - Ubiquitous Nature: Pr...

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  • August 5, 2024
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Microbiology UTA 2460 Chapter 4 Already Rated A+


### Prokaryotes Overview

- Definition: Prokaryotes are single-celled organisms that lack a nucleus and membrane-bound
organelles. They are classified into two domains:

- Bacteria

- Archaea



### Habitat and Characteristics

- Ubiquitous Nature: Prokaryotes are found everywhere, including extreme environments:

- Hot Springs

- Ice Caps

- Deep Ocean

- Skin and Mucosal Surfaces



- Adaptability: Prokaryotes are adaptable and resilient, having the ability to switch metabolic or
respiratory methods according to environmental conditions.



### Benefits of Prokaryotes

- Prokaryotes provide crucial contributions to our habitats, including:

- Stability of Ecosystems

- Carbon/Nitrogen Fixation

- Environmental Cleanup (e.g., bioremediation)



### Negative Impacts of Prokaryotes

- Some prokaryotes can be harmful and cause:

- Human Pathogens (disease-causing bacteria)

- Contributions to Climate Change (e.g., methane-producing microbes)

, ### Symbiotic Relationships

- Definition: A symbiotic relationship is the interaction between two species living in close association
with each other.

- Types of Symbiotic Relationships:

- Mutualism:

- Organism A: Benefitted

- Organism B: Benefitted

- Amensalism:

- Organism A: Harmed

- Organism B: Unaffected

- Commensalism:

- Organism A: Benefitted

- Organism B: Unaffected

- Neutralism:

- Organism A: Unaffected

- Organism B: Unaffected

- Parasitism:

- Organism A: Benefitted

- Organism B: Harmed



### Examples of Symbiotic Environments

- Prokaryotic involvement in symbiotic environments includes:

- Spores in Soil

- Skin Cells as Food Source

- Antimicrobial Defense on Skin

- Gut Nutrient Metabolism



### Communities of Prokaryotes

- Polymicrobial: Refers to prokaryotes that live in communities, showcasing diverse interactions.

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