Microbiology Exam #3 Vocabulary
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14 terms
Terms | Definitions |
|---|---|
 infection | relationship between host and parasite, ensuing struggle for supremacy |
| normal flora | infection that does not cause disease |
| pathogenicity | ability of a parasite to enter host tissue and/or cells |
| pathogen | parasitic organism that has ability to cause disease |
| opportunist | organism that is usually a commense |
| virulence | degree of pathogenicity |
| fomite | contaminated inanimate objects |
| bacteremia | presence of bacteria in bloodstream |
| septicemia | bacterium in bloodstream is the cause of the disease |
| portal of entry | site at which pathogenic organism enters host |
| infectious dose | number of pathogens that must enter host to establish disease |
| invasiveness | ability of a pathogen to penetrate tissues of the host |
| virulence factors | substances or structures that allow a pathogen to generate disease in the host |
| chemotaxis | movement along a chemical gradient |
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