Biology - Infection and Response

  • Created by: Jasmin3
  • Created on: 06-05-18 12:34
What are bacteria?
Very small cells which reproduce rapidly in your body and produce toxins that make you feel ill.
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What are viruses?
They are not cells, they reproduce rapidly. They make copies of themselves and burst, damaging your cells.
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What are protists?
Single- celled eukaryotes. They live inside other organisms and cause damage.
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What are fungi?
Single-celled hyphae that can grow and penetrate human skin.
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Name 3 ways pathogens can be spread.
Water, air and direct contact.
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Name 3 viral diseases.
Measles, HIV, Tobacco mosaic virus.
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Name a fungal disease.
Rose block spot.
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Name a disease caused by protists.
Malaria
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Name 2 bacterial diseases.
Salmonella and Gonorrhoea
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Name 4 ways to prevent spread of disease.
Being hygienic, Destroying vectors, Vaccination and Isolating individuals.
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How is your skin part of the defence system?
Act as a barrier, kills pathogens with antimicrobial substances.
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How is your hair and muscus part of your defence system?
They trap particles from getting up your nose.
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How does the trachea and bronchi help the defence system?
They are lined with cilia which waft the mucus up the throat to be swallowed.
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How is the stomach part of the defence system?
They have hydrocholric acid that kills pathogens.
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How are white blood cells important in your immune system?
They engulf and consume pathogens. This is called phagocytosis.
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How are antibodies produced?
White blood cells produce them when they come across foreign antigens.
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How are antibodies effective?
They produce rapidly and if same disease happens twice, antibodies are ready quicker.
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What are vaccinations?
A dead or inactive form of the pathogens, so the antibodies are ready for when the real infecton comes.
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Give 2 pros of vaccinations.
They control the outbreak of communicable diseases. Stop epidemics of diseases.
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Give 2 cons of vaccinations.
They don't always work. You can sometimes react badly.
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How do painkillers effect your body?
They relieve the pain but don't kill or affect the pathogen, they just reduce symptoms.
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How do antibiotics effect your body?
They kill the pathogen. Different antibiotics kill different types of bacteria.
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What is the biggest problem with antibiotics?
They don't cure viruses.
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How does bacteria become resistant to antibiotics?
They can mutate to resist it. It means only part of the bacteria is cured and the other part reproduces rapidly. This is called resistant strains.
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Where do drugs mainly come from? Name 1.
Plants, Aspirin.
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Other cards in this set

Card 2

Front

What are viruses?

Back

They are not cells, they reproduce rapidly. They make copies of themselves and burst, damaging your cells.

Card 3

Front

What are protists?

Back

Preview of the front of card 3

Card 4

Front

What are fungi?

Back

Preview of the front of card 4

Card 5

Front

Name 3 ways pathogens can be spread.

Back

Preview of the front of card 5
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