Science - Biology - Term 1

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  • Created by: mdanmaa
  • Created on: 10-10-22 20:26
What is a communicable disease?
A disease that can be transmitted.
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Define what a vector of disease is.
A vector is something that can carry disease without having the disease itself.
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4. Name the four types of pathogens.
protists, fungi, virus and bacteria
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How do bacteria make us ill?
They release toxins
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How do viruses make us ill?
when a virus has copied itself so many times by infecting many cells and our body’s normal functioning changes
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Viruses are different to other pathogens because...
they cannot reproduce on their own
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Bacteria are different to plant and animal cells because...
they do not have a nucleus
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Name the cell in the immune system that ingests pathogens to help identify the antigen present
phagocytes
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Epidemiologists who study the outbreaks of disease and how they spread would be interested in knowing the reproduction number. What does the reproduction number R0, tell us?
the average number of people an infected person infects other people at the start of an epidemic
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What are the protein markers on the outside of pathogens called
antigens
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What does immunity mean?
a reaction by the body that detects and destroys pathogens before they make you ill
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How do antibodies help the immune system?
they are produced by the white blood cells and help immobilise/identify the pathogen so it can be destroyed.
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Why does the immune system produce more antibodies after the second exposure?
it already has the antibody's information stored in memory cells, so can make them quickly.
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Other cards in this set

Card 2

Front

Define what a vector of disease is.

Back

A vector is something that can carry disease without having the disease itself.

Card 3

Front

4. Name the four types of pathogens.

Back

Preview of the front of card 3

Card 4

Front

How do bacteria make us ill?

Back

Preview of the front of card 4

Card 5

Front

How do viruses make us ill?

Back

Preview of the front of card 5
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