Staying healthy - B1c

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  • Created by: iram_f
  • Created on: 12-10-14 15:12
How does the body protect itself against pathogens?
The skin provides a barrier, blood clotting around a cut prevents any entry of pathogens, mucus in the respiratory tract traps pathogens and hydrochloric acid kills pathogen due to the high pH.
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Why are blind and double blind trials used in the testing of drugs?
Blind trials mean that the volunteer is not influenced by psychological factors of being given a placebo or drug, whilst in a double blind trial neither the volunteers or doctors can be biased.
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Using knowledge of the vector's life cycle, how can we prevent malaria?
As mosquitoes lay their eggs in stagnant water, so they can breathe, we can lay oil or drain stagnant ponds to kill the mosquito larvae which spread malaria.
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What is immunisation (vaccination)?
Weakened/dead pathogens are injected, triggering antibodies to be produced by white blood cells, as they recognise the antigens. Even after the antibodies have been produced, memory cells remain so antibodies can quickly detect pathogens again.
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How is active and passive immunity different?
Active immunity is the body's natural response of creating antibodies to attack pathogens, ensuring future protection against the same infection. Passive immunity is when antibodies are put into the body, to quickly respond to an infection.
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What are benign and malignant tumours?
Benign tumours grow slowly in a certain area whilst malignant tumours are aggressive as they
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What are benign and malignant tumours?
Benign tumours grow slowly in a certain area whilst malignant tumours are aggressive, as they grow in numerous places.
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How are benign and malignant tumours different?
Benign tumours grow slowly in a certain area whilst malignant tumours are aggressive, as they develop in numerous ar
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How are benign and malignant tumours different?
Benign tumours grow slowly in a certain area whilst malignant tumours are aggressive, as they develop in numerous areas of the body.
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Other cards in this set

Card 2

Front

Why are blind and double blind trials used in the testing of drugs?

Back

Blind trials mean that the volunteer is not influenced by psychological factors of being given a placebo or drug, whilst in a double blind trial neither the volunteers or doctors can be biased.

Card 3

Front

Using knowledge of the vector's life cycle, how can we prevent malaria?

Back

Preview of the front of card 3

Card 4

Front

What is immunisation (vaccination)?

Back

Preview of the front of card 4

Card 5

Front

How is active and passive immunity different?

Back

Preview of the front of card 5
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