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15 Cards in this Set

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pathogen
An organism that causes disease.
saprophyte
An organism that feeds on dead matter.
parasite
An organism that feeds on a living host.
aerobic organism
An organism that requires oxygen
anaerobic organism
An organism that does not require oxygen.
steady state
A state in which members of a population die as quickly as new members are born.
exponential growth
Population growth that is unhindered because of the abundance of resources for an ever-increasing population.
logistic growth
Population growth that is controlled by limited resources.
conjugation
A temporary union of two organisms for the purpose of DNA transfer.
plasmid
A small, circular section of extra DNA that confers one or more traits to a bacterium and can be reproduced separately from the main bacterial genetic code.
transformation
The transfer of a DNA segment from a nonfunctional donor cell to that of a functional recipient cell.
transduction
The process in which infection by a virus results in DNA being transferred from one bacterium to another.
endospore
The DNA and other essential parts of a bacterium coated with several hard layers.
strains
Organisms from the same species that have makedly different traits.
Name the 5 factors that tend to encourage bacterial growth
Moisture, moderate temperature, nutrition, darkness, and proper amount of oxygen