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17 Cards in this Set
- Front
- Back
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Micro-organism
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This term refers to microscopic organisms and includes viruses, bacteria, protoctista (protists), and some fungi and algae.
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Bacteria
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Small organisms consisting of single cells rarely more than 0.01mm in length. Can only be seen under a microscope. Their cell walls are made of a complex mixture of proteins, sugars, and lipids. Some have a slime capsule outside their cell wall. Inside their cell wall is the cytoplasm which contains granules of glycogen, lipid and other food preserves. (singular= bacterium)
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Flagella
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Used to move bacterial cell about.
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Aerobic Bacteria
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Bacteria which need oxygen for their respiration.
*These types of bacteria are used in the filter beds of sewage plants. |
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Anaerobic Bacteria
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Bacteria that don't need oxygen for respiration.
*These types of bacteria are used to digest sewage sludge and produce methane. |
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Fission
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The way bacteria reproduce; cell division.
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Asexual Reproduction
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Reproduction without the formation of gametes.
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Pathogens
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Parasitic organisms which cause disease.
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Host
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The organism in which bacteria live and reproduce.
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Viruses
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Most viruses are way smaller than bacteria and can only be seen with the electron microscope at magnifications of about X 30,000. They consist of a DNA or RNA core enclosed in a protein coat.
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Bacterial Diseases
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Tetanus, pneumonia, typhoid and syphilis.
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Viral Diseases
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Influenza, colds, herpes, and AIDS.
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Fungi
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Formed from thread-like hyphae rather than cells.
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Mycelium
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The network that are produced by branching hyphae.
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Hyphae
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Have walls, cytoplasm, nuclei, vacuoles, organelles, and inclusions.
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Saprotrophic Fungi
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Digest dead organic matter.
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Parasitic Fungi
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Digest living tissue.
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