B2 - Keeping Healthy


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What is Bacteria?
Bacteria are living cells and can multiply rapidly in favourable conditions. Once inside the body, they release poisons or toxins that can make us feel ill.
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what is a Virus?
Viruses are living cells smaller than bacteria. They can make hundreds of copied of themselves that make you ill.
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What is the function of white blood cells?
White blood cells can: -ingest pathogens and destroy them. -produce antibodies to destroy pathogens. -produce antitoxins that neutralise the toxins released by pathogens.
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What are Memory cells?
Memory cells are a type of white blood cell that can respond quickly when it meets a microorganism for the second time. They produce the right antibody for the particular microorganism and destroy it before you feel unwell. (being immune to disease)
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What is a pathogen?
Micro-organisms that cause disease.
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What does a vaccination do?
Vaccination involves putting a small amount of an inactive form of a Pathogen into the body.
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What do Vaccines contain?
live pathogens(disease) treated to make them harmless. Harmless fragments of the pathogen. Dead pathogens.
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What is a 'super bug'?
Mutations in bacteria can result in them becoming resistant to antibiotics, turning the bacteria into a ‘super bug’. Super bugs can develop while a person is taking a course of antibiotics.
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Card 2

Front

what is a Virus?

Back

Viruses are living cells smaller than bacteria. They can make hundreds of copied of themselves that make you ill.

Card 3

Front

What is the function of white blood cells?

Back

Preview of the front of card 3

Card 4

Front

What are Memory cells?

Back

Preview of the front of card 4

Card 5

Front

What is a pathogen?

Back

Preview of the front of card 5
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