virus

    Cards (22)

    • What are viruses considered to be?
      Organisms
    • How much smaller are viruses compared to animal cells?
      About 10,000 times smaller
    • Can viruses reproduce by themselves?
      No, they cannot reproduce alone
    • What do viruses use to replicate once inside a host cell?
      The host cell's own machinery
    • What happens to the host cell when viruses replicate inside it?
      The cell bursts, releasing new viruses
    • Why do viruses make us feel ill?
      They damage our bodies during replication
    • How is the measles virus spread?
      By droplets from coughing or sneezing
    • What are common symptoms of measles?
      A red rash and fever
    • Why is measles rare in the UK?
      Most people are vaccinated against it
    • How is HIV primarily spread?
      Through sexual contact or bodily fluids
    • What does HIV stand for?
      Human immunodeficiency virus
    • What does HIV do to the immune system?
      It causes a deficiency in the immune system
    • What symptoms might occur shortly after contracting HIV?
      Flu-like symptoms such as fever and tiredness
    • What happens to a person's immune system over time after contracting HIV?
      It becomes weaker and unable to fight infections
    • What is AIDS?
      A disease where the immune system fails
    • What was the outcome for people with AIDS before modern treatments?
      They often died from infections or cancer
    • What are anti-retroviral drugs used for?
      To prevent HIV from replicating
    • How can people with HIV live normal lives today?
      By accessing anti-retroviral medications early
    • What does the tobacco mosaic virus affect?
      Certain plant species like tobacco and tomato
    • Why is it called the tobacco mosaic virus?
      It causes a mosaic pattern on leaves
    • What is the effect of TMV on photosynthesis?
      It prevents proper photosynthesis in affected areas
    • What is the overall impact of TMV on plant growth?
      Plants cannot produce enough sugars for growth
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