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Biology
communicable diseases
viral diseases
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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
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