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Causes and Spread of Infection Essay

1.1Identify the differences between bacteria, viruses, fungi and parasites. Bacteria – bacteria are extremely small singular organisms which are found almost everywhere. Viruses – it is a coated genetic material that invades cells and use’s the cells apparatus for reproduction. Fungi – it is a multi-celled living organism

Parasites – they are types of living plants and animals that derive benefit from the metabolism of other animals and plants.

1.2 Identify common illnesses and infections caused by bacteria, viruses, fungi and parasites. Bacteria – Food poisoning, bronchitis, ear infections, tonsillitis. Viruses – common cold, stomach flu, warts.

Fungi – Athletes foot, ring worm, yeast infection.
Parasites – worms, malaria, trypanosomiasis (sleeping sickness)

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1.3 Describe what is meant by infection and colonisation.
Infection – is an invasion to body tissues from a disease- caused microorganism. Colonisation – is multiplication of microorganisms without tissue invasion or damage.

1.4 Explain what is meant by “systemic infection and localized infection” Systemic – is when infection is distributed throughout the whole body. Localized – is when infection is limited to a specific part of the body.

1.5 Identify poor practises that may lead to the spread of infection. If you don’t wash your hands, not wearing personal protective clothing, not clearing surroundings, not covering your mouth and nose when you sneeze or cough.

2.1 Explain the conditions needed for the growth of microorganisms. Food. micro – organisms need food to survive.
They like high protein food to survive, eg. poultry & fish. Warmth. most

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