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Bacteria, Archaea, Virus

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  • Give some examples of places where archaea can be found
    Hot springs, extremely acidic habitats, extremely salty habitats, near deep-sea vents, 8km below the earth's surface
  • Term refers to when the host cell bursts and new virus are released
    lysis
  • do archaea only live in extreme environments?
    No, archaea are everywhere
  • What do viruses need to reproduce?
    host cell
  • What do virus' need to reproduce?
    A host
  • how are archaea and bacteria different?
    both are prokaryotes but genetically very different, each has unique chemicals in their cell walls
  • can prokaryotes get energy, reproduce, and/or move?
    Yes, they can
  • Why are virus considered non-living?
    Viruses don't need nutrients/food and do not reproduce on their own. They need a host cell.
  • Describe host range.
    Each virus has a limited number of host cells that it can infect.
  • Are bacteria living things?
    Yes, they are
  • True or False: Bacteria live in most habitats
    True
  • What happens in the lytic cycle?
    The lytic cycle produces new viruses and breaks open the host’s cell wall, releasing the viruses.
  • Bacteria lacks a nucleus therefore it is
    Prokaryotic
  • Is bacteria smaller than a cell?
    Yes, they are.
  • word means "to break down"
    lytic
  • Virus are made up of what?
    DNA or RNA
  • a cell that contains DNA and cytoplasm is a _____________
    prokaryotic cell
  • Why don's doctors give antibiotics for viral infection?
    Antibiotics only kill bacteria ,they do not work on virus
  • Bacteria can move. What is the name of the structure that moves them?
    Flagellum
  • When a virus enters a bacterial cell, makes copies of itself and causes the cell to burst or lyse, it is in the _____________ cycle.
    Lytic
  • How do virus get their name usually?
    they are named after a disease or the person who discovered them
  • Are bacteria unicellular organisms?
    Yes
  • Virus are living or non-living particles?
    non-living
  • How do bacteria reproduce?
    By binary fission
  • Virus contain ___________ and __________.
    Protein and nucleic acids
  • These contain a dead form of a virus and give immunity to it?
    Vaccines
  • True or false: Can bacteria be both harmful and helpful? Give one example of helpful bacteria.
    True. Ex of helpful bacteria: the ones in the cheese, yogurt, in our stomach, intestine
  • How do bacteria reproduce?
    Binary Fission
  • a cell that contains DNA, a nucleus, cytoplasm and membrane-bound organelles is a _________________
    eukaryotic cell
  • Are all the molecules in archaea found in other living things?
    Some of the molecules in archaea are not found in any other living things
  • Are viruses surrounded by a protein coat?
    Yes, they are.
  • Where do archaea often live?
    Archaea often live where nothing else can.
  • Why do some scientists believe that viruses are not living organisms?
    Because viruses do not respond to their environment, have no metabolism, and cannot replicate on their own.
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