viral diseases

Created by

Izzie

Cards (21)

what is zoonosis 
a disease that can be caught from animals
what are viruses
intracellular parasites
how do viruses replicate
by lysis
what are the name of the proteins on the outside of viruses that attach to glycoproteins
spike proteins
cause the cell to take the virus in and then the cell will either make viral RNA or DNA
reaches ribosome
lysis takes place leading to spread
what is a viron
complete functional virus that has the capacity to affect living tissue
what makes individuals more likely to be affected
if they have a compromised immune system
why do you need regular vaccines for influenza
it mutates regularly
what caused spanish influenza
avian flu
what is the difference between HIV and AIDs
HIV is a virus
AIDs is a disease
one can have HIV but not AIDs
what was HIV/AIDs first detected
1981
what kind of virus is HIV
retrovirus
what is a retrovirus
a virus that inserts viral RNA as apposed to viral DNA
leading to reverse transcription
what did people first believe caused HIV
zoonosis via the consumption of bush meat
what are the enzymes involved in infection
reverse transcriptase (RNA goes to DNA)
integrase (inserts DNA)
protease (catalyses the break down of proteins)
what are the stages of forming a HIV viral protein
attracts to T cells
fuses with plasma membrane
reverse transcription takes place
DNA is inserted into host DNA
host transcribes viral DNA into viral mRNA
viral protein is formed
what are the structures found within a virus
surface protein
viral envelope
capsid
nucleic acid
reverse transcriptase
will people experience HIV symptoms immediately
not always
but they can experience short symptoms
which can cause secondary infections
how do you diagnose HIV
via blood tests
what are the 3 clinical categories of HIV infection
little/no symptoms high helper T
some symptoms and low T
clinical no T
what percentage of infections now are heterosexual
over 80%
what transmits HIV
transmission of bodily fluids