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Module #2 Vocab
Apologia Biology
14
Biology
9th Grade
01/25/2012

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Term
Pathogen
Definition
An organism that causes disease
Term
Saprophyte
Definition
An organism that feeds on dead matter
Term
Parasite
Definition
An organism that feeds on a living host
Term
Aerobic organism
Definition
An organism that requires oxygen
Term
Anaerobic organism
Definition
An organism that does not require oxygen
Term
Steady state
Definition
A state in which members of a population die as quickly as new members are born
Term
Exponential growth
Definition
Population growth that is unhindered because of the abundance of resources for an ever-increasing population
Term
Logistic growth
Definition
Population growth that is controlled by limited resources
Term
Conjugation
Definition
A temporary union of two organisms for the purpose of DNA transfer
Term
Plasmid
Definition
A small, circular section of DNA that confers one or more traits to a bacterium and can be reproduced seperately from the main bacterial genetic code
Term
Transformation
Definition
the transfer of a DNA segment from a nonfunctional donor cell to that of a functional recipient cell
Term
Transduction
Definition
The process in which infection by a virus results in DNA being transferred from one bacterium to another
Term
Endospore
Definition
The DNA and other essential parts of a bacterium coated with several hard layers
Term
Strains
Definition
Organisms from the same species that have markedly different traits
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