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VVC Microbiology Ch 13
Chapter 13 Viruses, Viroids, Prions
8
Microbiology
Undergraduate 2
06/01/2013

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Term
Virus
Definition
Virus- miniscule, acellular, infectious agents having DNA or RNA
Term
Characteristics of viruses
Definition
cannot carry out any metabolic pathway
neither grow nor respond to the environment
cannot reproduce independently
uses the host cell to replicate
No cytoplasmic membrane
no cytosol
no organelles
has extracellular and intracellular state
Term
Virion
Definition
extracellular state
Term
Capsid
Definition
capsid - protein coat
Term
Neucleocapsid
Definition
neucleocapsid - nucleic acid and capsid
Term
Virion contains
Definition
virion contains - capsid, nucleic acid, some have phospholipid envelopes, outer layer provides protection and recognition sites for host cells
Term
Intracellular state
Definition
capsid is removed, nucleic acid is released into host cell
Term
Viral nucleic acids may be
Definition
dsDNA
ssDNA
dsRNA
ssRNA
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