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Questions and Answers
What does WHO stand for?
What does WHO stand for?
World Health Organization
What are the four aspects of complete well-being?
What are the four aspects of complete well-being?
A disturbance in one area of well-being can affect other areas.
A disturbance in one area of well-being can affect other areas.
True
Which of the following are common causes of infections in children? (Select all that apply)
Which of the following are common causes of infections in children? (Select all that apply)
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Where do bacteria live?
Where do bacteria live?
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Bacteria are so small that they can only be seen with an electron microscope.
Bacteria are so small that they can only be seen with an electron microscope.
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Give two examples of how bacteria are used in the manufacturing process.
Give two examples of how bacteria are used in the manufacturing process.
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What is the optimal temperature range for bacteria to thrive?
What is the optimal temperature range for bacteria to thrive?
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What type of mineral concentration is ideal for bacteria growth?
What type of mineral concentration is ideal for bacteria growth?
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Bacteria can only use organic materials as a source of nutrition.
Bacteria can only use organic materials as a source of nutrition.
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What is the ideal pH for bacteria?
What is the ideal pH for bacteria?
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Which of the following methods are used to preserve food by making it less hospitable to bacteria? (Select all that apply)
Which of the following methods are used to preserve food by making it less hospitable to bacteria? (Select all that apply)
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Explain how freezing affects the consistency of food.
Explain how freezing affects the consistency of food.
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Study Notes
Health
- Health is defined by the WHO (World Health Organization) as complete physical, mental, social well-being.
- If one aspect of health is impaired, it often affects other aspects.
- Infections are common in children, caused by bacteria, viruses, parasites and fungi.
Bacteria
- Bacteria are tiny organisms found everywhere, including inside and on the human body.
- They are too small to be seen with the naked eye, only visible through a microscope.
- Bacteria are used in various processes, such as yogurt and sauerkraut production, waste treatment, and biofuel production.
- Some bacteria cause illness, while others spoil food.
- To thrive, bacteria need:
- A temperature between 20-37°C
- Moisture with a mineral content similar to 0.9% salt solution
- Organic matter for food
- Mostly oxygen
- A neutral pH (around 7)
- Food preservation methods to prevent bacterial growth include:
- Freezing at -20°C, though freezing can alter food consistency
- Refrigerating at +8°C
- Pickling (fermentation) using substances like vinegar (e.g. pickles)
- Drying (e.g., dried noodles, flour, sugar)
- Smoking with salt to remove water.
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Description
Explore the definitions and implications of health according to the WHO, and understand the role of bacteria in our lives. From beneficial uses to health risks, this quiz covers essential information about bacteria, their ecosystems, and the importance of health maintenance.
