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26 Cards in this Set
- Front
- Back
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Epidemiology
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-the study of how microbes spread within a group or population.
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Portal of entry
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-the way a microbe enters and infects a new host.
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Reservoir of infection
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- an object that allows a microbe to grow, reproduce and maintain the ability to infect a new host.
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Fomite
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- an object that allows a microbe to survive and pass to a new host.
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Opportunistic pathogens
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-Debilitated and immunosuppressed individuals are more likely to develop infections.
-infectious microorganism that is normally a commensal or does not harm its host but can cause disease when the host’s resistance is low. |
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Normal biota
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-harmless and some are even beneficial
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Transient organisms
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-found on skin for short periods of time, do not grow there, some can cause disease from one to another
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Antiseptic
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-antimicrobial agent kill remaining microbe
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Aseptic technique
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-method of handling microbes and materials in a way that minimizes contamination
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Inoculation
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-transfer microorganisms from one medium to another
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inoculum
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-Sample being transferred
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Inoculating loop and needle
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-two instruments are commonly used to transfer an inoculum. made from nichrome metal alloy, heats up very quickly
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Isolation streak plate
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-widely used method to separate individual bacteria from mixtures
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Isolated colonies
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-concentration of bacteria get so low that a single bacteria comes of the loop
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Autotroph
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-(feed self) organism that utilizes inorganic carbon as their source of carbon
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Heterotrophic
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-organisms cannot synthesize organic molecules from CO2
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Media
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-create proper environment in order to cultivate bacteria in laboratory, availible both broth and agar
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Mycobacterian tuberculosis
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-cause tuberculosis, may take years to develop into disease, can spread to other before ones is sick.
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cold virus
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-Develop faster, don't make host too sick, exposing to many other, from work to school.
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Fomite
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-object allow microbe to survive and pass to new host
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Soap
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-break down oil in skin, oil trap bacteria,
break down cell membrane, hand rubbing remove bacteria, |
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Pure culture
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-obtain by isolating bacteria
-develop vaccine, study organism that cause disease. |
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Robert koch
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agar, derived from seaweed, provide solid surface to grow bacteria, isolated colonies.
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Autocave
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-Instrument used to Sterilize media and equipment
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Incubater
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-hold constant temp, to grow bacteria
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Incinerator
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Device sterilize inoculating tool
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