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17 Cards in this Set
- Front
- Back
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True or False. Without microbes humans would not exist.
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true
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True or False. Microorganisms can change the characteristics of their habitat.
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true
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Microbiology revolves around what two themes?
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1) Understanding basic life processes
2) Application of that understanding to benefit of humans |
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Importance of Microorganisms are what 3 things?
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Oldest form of life
§ Largest mass of living material on Earth § Carry out major processes for biogeochemical cycles |
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Four classes of cellular macromolecules?
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Proteins
§ Nucleic acids § Lipids § Polysaccharides |
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The 6 Characteristics of Cellular Life?
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1) Compartmentalization + metabolism
2) Reproduction 3) Differentiation 4) Communication 5) Movement 6) evolution |
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Microorganisms interact in nature as ____________.
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microbial communities
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The environment in which a microbial population lives is its________.
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Habitat
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Ecosystem
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all living organisms + physical and chemical properties of the habitat
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Microbial Ecology
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is the study of microbes in their natural environments
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________+_________of microbes are controlled by resources (nutrients) and environmental conditions (e.g., temp, pH, O2)
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Diversity and abundances
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The activities of microbial communities can affect the _______ and _______ properties of their habitats
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chemical;physical properties
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Populations in microbial communities interact in various ways such as?
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Cooperation; Competition;Microbes also interact with their physical and chemical environment
§ Ecosystems are influenced/controlled by microbial activities § Microorganisms change the chemical and physical properties of their habitats through their activities |
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The First Cells?
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First self-replicating entities may not have been cells
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Life on Earth through the Ages
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Earth is 4.6 billion years old
The atmosphere was anoxic until ~2 billion years ago Life was exclusively microbial until ~1 billion years ago |
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Most microbial cells are found in _______ and _______
subsurfaces |
oceanic + terrestrial
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microrganism on human
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disease;food;argiculure; energy/enviroment;biotechnology
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