1.1 Identify the differences between Bacteria, Viruses, Fungi and parasites.
The common characteristics of bacteria:
Bacteria are microscopic single-cell organisms.
Different types of bacteria can be identified by their size and shape.
Bacteria can multiply outside the body.
Most bacteria need moisture, time, warmth and nutrients to survive and multiply.
Some bacteria are helpful.
Some bacteria produce toxins which cause unpleasant symptoms.
Most bacteria can be treated with antibiotics.
Some bacteria are resistant to antibiotics.
The common characteristics of viruses:
Viruses can only be seen with an electron microscope because they are so small.
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The host can be either animal or human. If an infection can be pasted on its then known as infectious. Infection can cause disease, be treated and make the host feel unwell. These symptoms can vary from mild to severe and in some cases be fatal.
Colonisation is the tem used when potentially harmful microorganisms grow and multiply on a person without causing them any harm.
The person who is colonised is known as a carrier. This is because although the microorganism they carry may not be harmful to them they could potentially transfer them to another person which could develop into an infection.
1.4 Explain what is meant by systemic infection and localised infection.
Is an infection that is limited to a specific area or a single organ. Therefore a localised infection will remain in, and only affect one part of the body with symptoms that are usually inflammation: tenderness, redness pain and swelling. They can be serious if they are internal. A common example of a localised infection is an infected wound. The infection is localised to the wound and does not generally make a person feel unwell, but without the appropriate treatment eventually leading to a systemic infection.
Is one which affects the entire body and multiple organs. A systemic infection will cause pain the area of infection bur also cause the whole body to feel unwell ie fever, aches and pains and feel lethargic. Some systemic infections if left untreated could be life threatening.
1.5 Identify poor practice that may lead to the spread of infection.
Not Washing hands frequently especially after dealing with any bodily fluids. Staff not staying at home if they are sick. Use a tissue, or cough and sneeze into your arm, not your hand. Turn away from other people. Open wounds not being covered especially on the hands. The incorrect use of PPE or the none use of PPE. Sharing personal items between each other. Incorrect food prep and storage.
2.1 Explain the conditions needed for the growth of micro-organisms.
The main requirements for the growth of micro-organisms are time and moisture, some need oxygen and warmth, (although micro-organisms can live without air and live in temperatures from 0 to 40 + degrees).
2.2 Explain the ways an infection agent might enter the body.
Microorganisms must either attach to, or penetrate one of bodies surfaces. The site through which a microorganism enters the body is called the route of entry. The skin acts as a...