Chapter 19 Vocabulary Review

20 terms by Sarah-Goodrich

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Lysogenic infection

process in which viral DNA becomes part of a host cell's DNA

eubacteria

the larger of the two kingdoms of prokaryotes (no longer exists)

chemoautotroph

organism that obtains energy from inorganic molecules

toxin

substance produced by some bacteria that poisons hot cells

prion

pathogen that causes disease in animals by forming a protein clumb

bacteriophage

virus that infects bacteria

coccus

spherical bacterium

antibiotic

compound that can destroy bacteria

virus

a particle of nucleic acid, protein, and in some cases, lipids

chemoheterotroph

organism that must take in organic molecules for both energy and a supply of carbon

prokaryote

organism consisting of one cell that lacks a nucleus

spirillum

spiral-shaped bacteria

prophage

viral DNA that is embedded in the host's DNA

pathogen

disease-causing agent

lytic infection

process in which a hsot cell bursts after being invaded by a virus

endospore

spore formed by bacteria when growth conditions become unfavorable

bacillus

rod-shaped bacterium

binary fission

process in which a bacterium replicates its DNA and divides in half

obligate anaerobe

organism that can live only in an oxygen-free environment

vaccine

preparation of weakened or killed pathogens

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