viral diseases

    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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