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23 Cards in this Set

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a strand of nucleic acid encased in a protein coat that can infect cells and replicate within them
virus
a protein sheath that surrounds the nucleic acid core in a virus
capsid
outer layer covering the capsid of many kinds of viruses
envelope
protein with carbohydrate molecules attached
glycoprotein
virus that infects bacteria
bacteriophage
a disease-causing agent
pathogen
cycle of viral infection; results in replication of virus and cell destruction
Lytic cycle
the viral DNA which inserts into a host cell's chromosome
provirus
cycle in which a viral genome replicates as a provirus without destroying the host cell
Lysogenic cycle
a virus that evolves in a geographically isolated area and is pathogenic to humans
Emerging virus
infectious particles composed of protein with no nucleic acid
prion
in plants, infectious disease agent composed of a single strand of RNA with no capsid
viroid
short, thick outgrowth of a bacterium that allows it to attach to another bacterium
pilus
rod-shaped bacterium
bacillus
spherical-shaped bacterium
coccus
spiral-shaed bacerium
spirillum
a gelatinous outer layer enclosing many bacterial cell walls
capsule
chemical used as a drug to kill bacteria
antibiotic
dormant bacterial cell enclsoed by a touch coating that is highly resistant to environmental stress
endospore
temporary union of two organisms to exchange nuclear material
conjugation
term for processes that do not require oxygen
anaerobic
term for processes that require oxygen
aerobic
chemical compound excreted into the environment by bacteria that are poisonous to eukaryotic cells
toxin