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16 Cards in this Set
- Front
- Back
What are the two types of pathogen?
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Bacteria and Viruses
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Describe how bacteria reproduces.
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Bacteria reproduce rapidly inside your body.
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How does bacteria make you feel ill?
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By damaging your cells and producing toxins (poisons).
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How do viruses copy themselves?
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Viruses copy themselves by invading cells and using the cells machinery to make tons of copies.
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What happens after the viruses have finished coping themselves?
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The cell will usually then burst, releasing all the new viruses.
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What does the cell damage do?
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This cell damage is what makes you feel ill.
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What is in your respiratory tract (airways) and why are they there?
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Your skin, plus hairs and mucus in respiratory tract (airways) stop nasties getting in.
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What do your cells do if your skin is cut?
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If your skin is cut, tiny bits of cells help your blood clot quickly to stop anything else getting in.
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What happens if a pathogen got through a cut?
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If something does make it through, your immune system kicks in.
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What is the most important part of your immune system?
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The most important part of your immune system kicks in.
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What are the three lines of attack that your body uses when it becomes an invading pathogen?
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Consuming Them
Producing Antibodies Producing Antitoxins |
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What can the white blood cells do to the pathogens?
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White blood cells can engulf (surround) the pathogens and digest them.
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What does every invading pathogen have on its surface and what are they called?
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Every invading pathogen has unique molecules on its surface. These molecules are called antigens.
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What happens when your white blood cells come across a foreign antigen (i.e. one they don't know)?
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When your white blood cells come across a foreign antigen (i.e. one they don't know), they will start to produce antibodies.
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What do the antibodies do to the pathogens?
The antibodies produced are specific to that type of antigen... why? |
Antibodies lock onto and kill the invading pathogens. The antibodies produced are specific to that type of antigen so they won't lock on to any others.
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What do antitoxins do?
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These stop toxins produced by invading bacteria.
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