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The Virus/HIV- Nashoba
Dr. Form's Models for disease class quiz on viruses and HIV
22
Other
12th Grade
09/04/2008

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Cards

Term
capsid
Definition
rigid shell that protects the genetic code of a virus
Term
icosahedron
Definition
triangular sides that form the sides of a common capsid
Term
capsomeres
Definition
protein building blocks of the capsid (shown as cone like structure)
Term
Advantages of capsomeres
Definition
saves genetic material; same shape helps to support defective capsomeres
Term
viral envelope
Definition
some capsids have as a thick outer cloak made out of pieces of cell membrane collected when the virus buds
Term
what viral envelope does
Definition
conatins proteins that can connect with receptor proteins on a cell (lock and key)
Term
HIV viral envelope binds with...
Definition
CD4
Term
If HIV were the size of a softball...
Definition
the host white blood cell would be the size of a classroom
Term
DNA virus
Definition
when cell is invaded the cell's genetic code is copied into viral mRNA. When the mRNA travels to the ribosomes it directs the cell to create proteins for the virus' replication
Term
RNA viruses
Definition
When virus infects a cell,it releases its RNA that attaches to ribsomes to be madeinto virus proteins
Term
Retrovirus (ex. HIV)
Definition
uses reverse transcriptase which converts viral RNA to viral DNA and viral DNA puts itself into host protein
Term
gp120
Definition
attached to gp41 (cap on thingy) glycoprotein
Term
gp41
Definition
post of gp120 that is anchored in envelope membrane
Term
p17 matrix protein
Definition
inside viral envelope, protects virus
Term
protease
Definition
acts like a chemical scissor to cut viral proteins into usable lengths (eight filled in black)
Term
integrase
Definition
inserts the viral code into the hosts DNA (white oval)
Term
reverse transcriptase
Definition
(traingle) converts viral RNA to vial DNA
Term
long terminal repeats
Definition
cap each end of HIV and conatin sequences to help virus replication
Term
GAG
Definition
gene that provides code for building blocks of matrix protein and capsid shell
Term
ENV
Definition
gene that provides code for envelope glycoproteins
Term
POL
Definition
gene that provides the code for enzymes: reverse transcriptase, protease, and integase
Term
How many genes does HIV have
Definition
9
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