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Tortora ch-6 terms

QuestionAnswer
Obligate Aerobes Organisms that require oxygen to live
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
Obligate anaerobes Organisms that are killed in the presence of O2
Aerotolerant anaerobes Organisms who cannot use oxygen for growth but they tolerate it
Microaerophiles Organisms who need an oxygen content lower than the atomosphere
Quorum sensing Cell to cell communication in biofilms
Chemically defined medium One whose exact chemical composition is known
complex media made up of nutrients including extracts from yeasts, meat, plants, or digests of proteins
Reducing media contains ingredients like sodium thioglycolate that deplete oxygen concentration in the culture medium
Selective media Designed to supress growth of unwanted bacteria and encourage the growth of desired microbes
Differential media make it easier to distinguish colonies of the desired organism from other colonies growing on the same plate
enrichment culture provides nutrients and environmental conditions that favor the growth of a particular microbe but not others.
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
generation time time required for a cell to divide and the population to double
Created by: BiologyBee
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