14 terms

Bacteria, Virus, Protist, and Fungi

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Saprophyte
An organism that uses dead or decaying material as an energy source. They recycle nutrients so they will be available for other organism.
Pathogen
Any organism that can cause disease in another organism.
Bacteria
Unicellular organisms classified in two groups called archaebacteria and eubacteria.
Eubacteria
The larger of the two groups of bacteria.
Archaebacteria
The older of the two groups of bacteria.
Virus
Nonliving particle that is little more than a strand of DNA or RNA protected by a coat of protein.
Capsid
The hard exterior coating that protects the genetic material of a virus.
Host Cell
Any plant, animal, or bacterial cell that is attacked and invaded by a virus.
Genetic Mutation
Any change in an organisms DNA brought about by changes in the environment, infection of viruses, or through evolution and natural selection.
Antibiotic
Any substance produced by one organism that can kill another organism.
Vaccine
Viral disease prevention made up of weakened virus particles that are not capable of causing disease.
Binary Fission
The reproductive process where one cell divides into two cells with exactly the same DNA.
Protist
Eukaryotic single or multi-celled organisms that live in a moist or wet environment.
Three main types of Protists
Plant like, animal like, and fungus like.