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Bacteria and viruses

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  • Describe the structure of a virus.
    A strand of DNA or RNA surrounded by a layer of protein.
  • After a virus attaches to a host cell, what does it do next?
    It injects its genetic material into the host cell.
  • What is the function of a capsule in bacteria?
    It is a covering used for protection.
  • Do all bacteria have a cytoplasm?
    YES
  • Do all bacteria have a cell membrane?
    YES
  • After a virus injects its genetic material into the host cell, what does it do next?
    The virus DNA/RNA takes over the host DNA/RNA.
  • True or false: Antibiotics can kill viruses.
    FALSE
  • Do all bacteria have DNA?
    YES
  • Do scientists all agree that viruses are alive?
    No, there is some debate as to whether they are alive or not.
  • After the virus' genetic material takes over the host's genetic material, what does it do next?
    The host cell makes more viruses.
  • Do all bacteria have a capsule?
    No, but some of them do.
  • Do all bacteria have a flagellum?
    No, but some of them do.
  • Do all bacteria have ribosomes?
    YES
  • What do bacteria eat? (name 1 way)
    some break down dead organisms, some make their own food
  • Is the chicken pox virus a latent virus?
    YES
  • Do all bacteria have pilli?
    No, but some of them do.
  • Describe how a latent virus affects its host.
    A virus that can be inactive in your body.
  • What is the function of a flagellum in bacteria?
    It whips back and forth to help them move.
  • Are all bacteria bad for you?
    No, there are a lot of good bacteria!
  • What is the function of pilli in bacteria?
    To help the bacterium to attach to surfaces and each other.
  • What are the three shapes that bacteria can come in?
    rod-shaped, round, and spiral
  • Describe how an active virus affects its host.
    It causes damage right away.
  • Bacteria reproduce through a process called fission. Is this asexual or sexual reproduction?
    asexual reproduction
  • Do all bacteria have a cell wall?
    Yes!
  • After the host cell makes all the viruses it can, what happens next?
    The host cell is destroyed and the viruses are released.
  • What is the type of asexual reproduction that bacteria go through?
    fission
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