| Front | What is the function of stents |
| Back | A stents is a tube which can be inserted into the coronary artery to keep narrowed or blocked arteries open |
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| Front | Describe a food chain |
| Back | All food chains begin with a producer which synthesises new molecules. On land this is usually a green plant that makes glucose by photosynthesis. Producers are eaten by primary consumers, which in turn may be eaten by secondary consumers and tertiary consumers |
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| Front | Give two ways a person with a mild infection of Salmonella can help prevent the spread of bacteria to other people (2 marks) |
| Back | - isolate yourself- wash hands after using toilet / being sick |
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