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Biology
04/14/2011

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Term
facultative anaerobe
Definition
An organism, such as a bacterium, that can live in the absence as well as in the presence of atmospheric oxygen.
Term
obligate anaerobe
Definition
An organism, such as a bacterium, that can live only in the absence of oxygen.
Term
chemotroph
Definition
An organism, such as a bacterium, that can live only in the absence of oxygen.
Term
phototroph
Definition
any organism that uses light as its principal source of energy.
Term
autotroph
Definition
any organism capable of self-nourishment by using inorganic materials as a source of nutrients and using photosynthesis or chemosynthesis as a source of energy, as most plants and certain bacteria and protists
Term
heterotroph
Definition
an organism requiring organic compounds for its principal source of food.
Term
endospore
Definition
the inner coat of a spore. Compare intine.
Term
pilus
Definition
hlep the cell get around
Term
glycocalyx
Definition
An outer filamentous coating of carbohydrate-rich molecules on the surface of certain cells.
Term
capsule
Definition
to furnish with or enclose in or as if in a capsule; encapsulate.
Term
plasmid
Definition
a segment of dna independent of the chromosomes and capable of replication, occurring in bacteria and yeast: used in recombinant DNA procedures to transfer genetic material from one cell to another.
Term
obligate aerobe
Definition
An organism, such as a bacterium, that can live only in the presence of oxygen
Term
transfrormation
Definition
the changing of a thing
Term
conjugation
Definition
a temporary union of two bacteria, in Escherichia and related groups, in which genetic material is transferred by migration of a plasmid, either solitary or as part of a chromosome, from one bacterium, the donor, to the other, the recipient; sometimes also including the transfer of resistance to antibiotics
Term
transduction
Definition
the transfer of genetic material from one cell to another by means of a virus.
Term
patholgy
Definition

Term
exotoxin
Definition
a soluble toxin excreted by a microorganism.
Term
endotoxin
Definition
the toxic protoplasm liberated when a microorganism dies and disintegrates, as in Eberthella typhi, the causative agent of typhoid fever.
Term
antibiotic resistance
Definition
bacteria that is resistance to dugs
Term
zoonosis
Definition
any infection or disease that is transmitted to man from lower vertebrates
Term
bioremediation
Definition
The use of certain biological agents, especially bacteria, to remove or neutralize contaminants from polluted soil or water.