Biology Definitions pg. 41 - 50

An organism that feeds on dead matter

An organism that feeds on a living host

An organism that requires oxygen

An organism that does not require oxygen

A state in which members of a population die as quickly as new members are born

Population growth that is unhindered because of the abundance of resources for an ever increasing population

Population growth that is controlled by limited resources

A temporary union of two organisms for the purpose of DNA transfer

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

The transfer of a DNA segment from a nonfunctional donor cell to that of a function recipient cell

The process in which infection by a virus results in DNA being transferred from one bacterium to another

The DNA and other essential parts of a bacterium coated with several hard layers