virus & Bacteria test

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third quarter 9th grade biology test over bacteria and viruses.

binary fission

a type of asexual reproduction that replicates its DNA and divides in half, producing two identical cells

conjugation

a process when prokaryotes exchange genetic information

endospore

a thick internal wall that encloses the DNA and a portion of the cytoplasm

cell division

process by which a cell divides into two new daughter cells

decomposers

organism that breaks down and obtains energy from dead organic matter

nitrogen fixers

prokaryotes that convert nitrogen gas into ammonia. the ammonium is then converted into nitrates that plants can use

nodules

knobs on the root of plants

producers

organisms that produce food and biomass

consumers

organism that relies on other organisms for its energy and food supply

bacteriophage

viruses that infect bacteria

capsid

the protein coat surrounding a virus

pathogen

microorganisms, viruses and prokaryotes, that cause disease

prion

protein infectious particles

emerging disease

an unknown disease that appears in a population for the first time or a well-known disease that suddenly becomes harder to control

superbug

bacterial disease that is resistant to whole groups of antibiotics

antibiotic

a number of drugs that can be used to attack a bacterial infection

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