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ch.6 virus

life cycle continued (3)

QuestionAnswer
life cycle of eukaryotes same as bacteria, attachment, penetration, biosynthesis, maturation, and release (see
tissue tropism. most viruses only infect certain types of cells within tissues.
animal viruses enter through endocytosis (engulfment by the host cell) or through membrane fusion (viral envelope with the host cell membrane).
viral mRNA is used to make viral proteins
once the viral proteins are made they are released into the extracellular fluid, the cell is not killed, makes more virus
nucleic acid biosynthesis normal flow dsDNA
what Nucleic acid biosynthesis makes viral proteins? ssRNA
What is the viral polymerase? RdRp
retrovirus +ssRNA viruses with alternative mechanism for viral nuclic acid synthesis
reverse transcriptase special enzyme with capsid that make complementary ssdna using +ssdna as template made into dsdna and become permanant part of host
provirus integrated viral genome, chronic infection, no excision after splicing, example, HIV
persistant infections, that can remain silent chicken pox (varcilla), herpes, epstein barr
chronic viruses hiv, hep C
Created by: olivemaryjo
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