Pathogens and Disease

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How is HIV spread?
It is spread by sexual contact or exchange of body fluids, e.g. it can be transmitted in blood when drug users share needles.
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What happens if HIV is not treated?
The virus enters the lymph nodes and attacks the body's immune cells.
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What is AIDs?
Later stage of HIV, it is when the body's immune system is damaged and cannot fight off other infections or cancers.
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What can bacteria do?
They can damage cells directly or produce toxins that damage tissues.
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What is salmonella?
It is a type of food poisoning caused by bacteria
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Symptoms of salmonella
Fever, abdominal cramps, vomiting and diarrhoea
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What is gonorrhoea?
It is a sexually transmitted disease (STD) caused by bacteria, spread by sexual contact.
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Symptoms of gonorrhoea
Thick, yellow or green discharge from the vagina or penis and pain when urinating
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What are protists?
They are single-celled organisms
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How does the protists cause malaria?
The protist uses a particular type of mosquito as a vector. It is passed on to a person when they are bitten by the mosquito.
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Example of a fungal disease
Rose Black Spot
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How is Rose black spot spread?
It is spread when spores are carried from plant to plant by water or wind
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Symptoms of rose black spot
Purple or black spots develop on leaves, which often turn yellow and drop early. The loss of leaves will stunt the growth of the plant because photosyntesis is reduced.
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How can rose black spot be treated?
Using fungucides and removing and destroying the affected leaves.
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Other cards in this set

Card 2

Front

What happens if HIV is not treated?

Back

The virus enters the lymph nodes and attacks the body's immune cells.

Card 3

Front

What is AIDs?

Back

Preview of the front of card 3

Card 4

Front

What can bacteria do?

Back

Preview of the front of card 4

Card 5

Front

What is salmonella?

Back

Preview of the front of card 5
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