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retroviruses
retroviruses
14
Medical
Professional
04/22/2011

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Term
Oncoviruses
Definition
transform cells in culture and cause cancer
Term
Lentiviruses
Definition
– slow developing (“lengthy”),
Term
Spumaviruses
Definition
not known to be associated with human disease
Term
where did retrovirus come from?
Definition
ubiquitous in nature
become inherite dan dpassed to offspring once instered into germ line cells.
-integrate permenant copy of their genome in your genome.
Term
orgin f HIV
Definition
chimp to human for SIV. and became HI
condtions:
Exposure risk (bloodborne contact during hunting and butchering) leads to the initial infection
(ii) Transmission in the new host via bloodborne or sexual contact
(iii) Adaptation of virus increases likelihood of human-human transmission (mutations in viral genes)
Term
where did it come from?
Definition
western africa introduced to human.

then hiaiti brought it to USA and africa.
Term
unifying feature:
-structure of RNA
Definition
-Enveloped, positive-stranded RNA viruses
-
Term
waht defines retrovirus?
Definition
Encode an enzyme, reverse transcriptase, that converts the genomic RNA into a double-stranded DNA intermediate (this goes against the usual flow of genetic information from RNA to DNA)
Term
t/f
negative stranded RNA
Definition
false, postive, look jus tlike mrna w/ gprime cap and polyA tail
Term
t/f
2 copies present as dimer?
Definition
true
Term
t.f

each copy does not have a trna bound
Definition
false. each does
Term
gene order:
pol-gag-env?

t.f
Definition
false

gag-pol-env
Term
genome structure:
Definition
R, U5, U3, sigh
Term
homology at end of rna peices allows...?
Definition
synthesized DNA to jump to other end and hav U3 region in proper position.
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