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24 Cards in this Set
- Front
- Back
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A nonliving, infectious particle composed of a nucleic acid and a protein coat; it can invade and destroy a cell.
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Virus
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A virus, microorganism, or other substance that causes disease; an infectious agent.
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Pathogen
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A protein sheath that surrounds the nucleic acid core in a virus.
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Capsid
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A membranelike layer that covers the capsids of some viruses.
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Envelope
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A protein to which carbohydrate molecules are attatched.
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Glycoprotein
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A virus that infects bacteria.
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Bacteriophage
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The cycle of viral infection, replication, and cell destruction.
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Lytic Cycle
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The cycle in which the viral genome replicates without destroying the host cell.
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Lysogenic Cycle
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A disease in which a person's immune system is unable to defend against infections that do not normally occur in healthy individuals.
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AIDS
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See on back
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HIV reproduces in T cells and then destroys them.
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AN infectious particle that consists only of a protrein and that does not contain DNA or RNA.
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Prion
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An infectious agent that consists of a small strand of RNA and that causes disease in plants.
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Viroid
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Bacteria differs from Eukaryotes in at least seven ways.
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1. Internal compartmentalization
2. Cell Size 3. Multicellularity 4. Chromosomes 5. Reproduction 6. Flagella 7. Matabolic Diversity |
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A rod-shaped bacterium.
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Bacillus
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A sphere-shaped bacterium.
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Coccus
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A spiral-shaped bacterium..
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Spirillum
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In mosses, the part that contains spores; in bacteria, a protective layer of polysaccharides around the cell wall.
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Capsule
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A substance that can inhibit the growth of or kill some microorganisms.
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Antibiotic
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A thick-walled protective spore that forms inside a bacterial cell and resists harch conditions.
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Endospore
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A process in which 2 organisms exchange genetic material.
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Conjugation
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Describes a process that does not require oxygen.
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Anaerobic
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Describes a process that requires oxygen.
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Aerobic
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BActeria that obtain energy by removing electrons from inorganic molecules such as ammonia, NH3.
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Chemoautotrophs
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A substance that is produced by one organism and that is poisonous to other organisms.
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Toxin
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