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Bacteria and Viruses Quiz

Quiz by Joseph Callahan

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20 questions
Show answers
  • Q1
    What would happen to a virus if it couldn't find a host cell to invade?
    It wouldn't be able to multiply
    It's genetic information would wither away
    It wouldn't be able to travel through the air
    It would not be able to exist
    30s
  • Q2
    Which term best describes viruses?
    harmless
    gargantuan
    sterile
    miniscule
    30s
  • Q3
    What do viruses have in common with your body's cells?
    Their genetic material is surrounded by a nucleus
    They contain DNA or RNA
    They are surrounded by capsids
    They contain many complex organelles
    30s
  • Q4
    What is the difference between DNA and RNA
    DNA is a more complex molecule than RNA
    RNA contains genetic information; DNA does no
    DNA contains genetic information, RNA does no
    RNA is a more complex molecule than DNA
    30s
  • Q5
    What's the difference between a pathogenic virus and a harmless one?
    Pathogenic viruses make copies of themselves; harmless ones don't
    Pathogenic viruses end up killing cells; harmless ones don't
    Pathogenic viruses get inside cells; harmless ones don't
    Pathogenic viruses are surrounded by capsids; harmless ones aren't
    30s
  • Q6
    What do the viruses that cause HIV, hepatitis, and ebola have in common?
    They are harmless viruses
    They cannot replicate inside human cells
    They are spread through contaminated water
    They can kill people
    30s
  • Q7
    Which of the following is a true statement about viruses?
    They can only be spread through exposure to animal waste
    They can be spread in a number of different way
    They are only spread through person-to-person contact
    All of them are harmful to human
    30s
  • Q8
    What does a virus do once it's inside one of your cells?
    It stays inside the cell for a while, and then leaves
    It uses the cell's machinery to make copies of itself
    It prevents the mitochondria from converting glucose to ATP
    It eats up all of the machinery in the cell
    30s
  • Q9
    What can you infer about the virus that causes the common cold?
    It cannot be spread by person-to-person contac
    It is harmless
    It is usually deadly, but not pathogenic
    It is pathogenic, but not usually deadly
    30s
  • Q10
    If you have a cold, why should you cover your mouth when you sneeze?
    To prevent other people from breathing in the viruses you expel
    To get all of the cold viruses out of your body and onto your skin
    To keep as many viruses as possible inside your body
    To prevent viruses from infecting the cells in your nose and mouth
    30s
  • Q11
    What does Tim mean when he says bacteria are the most abundant form of life on earth?
    They're the smallest form of life on earth
    They're the most specialized form of life on earth
    They're the most commonplace form of life on earth
    They're the most diverse form of life on earth
    30s
  • Q12
    What do all bacteria have in common?
    They all have cell nuclei
    They're all single-celled organisms
    They can all be found inside the human body
    They're all multi-cellular organisms
    30s
  • Q13
    How did bacteria make complex life on Earth possible?
    By destroying life-inhibiting volcanoes
    By releasing oxygen into the atmosphere
    All of the above
    By evolving rapidly into multi-celled organisms
    30s
  • Q14
    What might happen if you didn't have bacteria in your digestive tract?
    You wouldn't be able to eat vegetables
    Your intestines would shut down
    Your body couldn't break down certain types of food
    You would never get sick
    30s
  • Q15
    Nitrogen-fixing bacteria help plants thrive. What do nitrogen-fixing bacteria do
    Transform nitrogen into carbon dioxide
    Convert nitrogen in the soil into a form that plants can absorb
    Absorb harmful nitrogen from the bodies of plants
    Absorb nitrogen in the soil before it harms plants
    30s

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