Biology 1a - Human Biology

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What are pathogens?
Pathogens are microorganisms (bacteria and viruses) that cause disease
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What does Bacteria release?
Toxins
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What do viruses do to our cells?
Viruses damage our cells
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What 3 ways do white blood cells protect the body from pathogens?
Phagocytosis , antibodies and antitoxins
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Describe the process of phagocytosis
ENGULF - INGEST - DESTROY - DIGEST
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What leads to immunity of a pathogen?
The immune system of the body produces specific antibodies to kill a particular pathogen.
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Why do pathogens make us feel ill?
Pathogens are a weakened or dead form of the virus
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What is immunity?
Protection against infectious diseases
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Who discovered that hand washing prevents the risk of spreading disease?
Dr. Semmelweis
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Do painkillers cure disease?
No, they just help to reduce the symptoms
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What do antibiotics do?
Antibiotics kill the bacteria causing the problem without killing your body cells.
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Do antibiotics destroy viruses?
No, viruses reproduce using your own body cells therefore it is very difficult to develop drugs that destroy just the virus without killing the body's cells.
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What can happen when bacteria mutates?
Mutations can cause bacteria to become resistant to antibiotics.
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Other cards in this set

Card 2

Front

What does Bacteria release?

Back

Toxins

Card 3

Front

What do viruses do to our cells?

Back

Preview of the front of card 3

Card 4

Front

What 3 ways do white blood cells protect the body from pathogens?

Back

Preview of the front of card 4

Card 5

Front

Describe the process of phagocytosis

Back

Preview of the front of card 5
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