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26 terms

Micro study guide 3 - oxygen requirements for bacteria

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strict obligate aerobe
a microbe that can only survive in the presence of free oxygen
strict obligate anaerobe
a microbe that can only survive in the absence of free oxygen
strict obligate anaerobe
air is toxic, organism will not survive if exposed to air, require the absence of the oxygen found in the air in order to survive
strict obligate aerobe
require the oxygen found in the air in order to survive, if oxygen is removed or depleted thru use, the aerobic organism will not survive, virtually all higher organisms belong to this group
microaerophilic
oxygen is not toxic but can only be tolerated in low concentrations
microaerophilic
a microorganism that requires very little free oxygen
facultative aerobe
prefers the absence of oxygen
facultative aerobe
a microorganism that prefers an environment devoid of oxygen but has adapted so that it can live and grow in the presence of oxygen
facultative anaerobe
prefers the presence of oxygen
facultative anaerobe
an organism that prefers an oxygen environment but is capable of living and growing in its absence
75-80%
what is the percentage of water as it relates to the weight of bacteria
minimum, maximum and optimum
what are the temperature ranges for the three different bacteria
psychrophiles
0 - 25 celsius
mespphiles
25 - 40 celsius
thermophiles
40 - 70 celsius
isotonic
equal concentration of solute inside and outside of the cell
hypotonic
lesser concentration of solute outside the cell
hypertonic
greater concentration of solute inside the cell
symbiotic
mutualism, commensalism and parasitism
mutualism
ABFSE; a relationship in which organisms of two different species live in close association to the mutual benefit of each
commensalism
ABFSE; the symbiotic relationship of two organism of different species in which one gains some benefit such as protection or nourishment and the other is not harmed or benefited
parasitism
ABFSE; an interactive relationship between two organisms in which one is harmed and the other benefits
non-symbiotic
synergism, antagonism
synergism
ABFSE; the harmonious action of two or more microorganisms producing an effect that neither could produce alone
antagonism
ABFSE; mutual opposition or contrary action. The inhibition of one microorganism by another
enzymes
biological or organic catalyts