Tortora ch-6 terms
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| Obligate Aerobes | Organisms that require oxygen to live
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| Facultative anaerobes | Organisms that can use O2 when its present, but do not require it. Their energy production is decreased in the presence of O2
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| Obligate anaerobes | Organisms that are killed in the presence of O2
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| Aerotolerant anaerobes | Organisms who cannot use oxygen for growth but they tolerate it
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| Microaerophiles | Organisms who need an oxygen content lower than the atomosphere
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| Quorum sensing | Cell to cell communication in biofilms
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| Chemically defined medium | One whose exact chemical composition is known
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| complex media | made up of nutrients including extracts from yeasts, meat, plants, or digests of proteins
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| Reducing media | contains ingredients like sodium thioglycolate that deplete oxygen concentration in the culture medium
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| Selective media | Designed to supress growth of unwanted bacteria and encourage the growth of desired microbes
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| Differential media | make it easier to distinguish colonies of the desired organism from other colonies growing on the same plate
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| enrichment culture | provides nutrients and environmental conditions that favor the growth of a particular microbe but not others.
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| List the steps of binary fission | 1) cell elongates and DNA is replicated 2)cell wall and plasma membrane begin to constrict 3) cross wall forms 4) cells separate
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| generation time | time required for a cell to divide and the population to double
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