apologia biology module 2

vocabulary for module 2

14 cards·by phlueght63

pathogenparasitesaprophyte

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

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 bacteri

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 serial hard layers

strains

organisms from the same species that have markedly different traits