Unit 22
Unit 22
1.1
Bacteria are a single cell micro-organism that can only be seen from under a microscope. It lives off the nutrients from its surroundings. Viruses are disease producing agents far smaller than bacteria, They are enclosed in a protein coating which makes them more difficult to destroy.
The basic unit of Fungi is a hypha which is a hollow tube. The hypha threads spread out over and into the food material making a visible mesh or mycelium. Some fungi form together to create toadstools. They spread by releasing spores into the environment. A parasite is an organism that lives on or in a host and gets its nutrients from or at the expense of its host. Parasites are different from bacteria or viruses because their cells share many features with human cells.
1.2
Bacteria
Food poisoning. (Salmonella)
Whooping cough
Tuberculosis
Tonsillitis
MRSA (Methicillin-resistant Staphylococcus aureus)
Viruses
Chicken pox
AIDS/HIV
Mumps
Common cold
Herpes
Fungi
Athlete foot.
Yeast infections
Ringworm
Thrush
Parasites
Tapeworms
Lice
Fleas
Lymes disease
Scabies
1.3
Colonisation occurs whenever any one or more species populate an area and infection is the invasion of body tissues by disease causing micro-organisms, their multiplication and the reaction of body tissues to these micro-organisms.
1.4
Systemic infection means that it is in the blood stream and spreading or has spread throughout the body. Localised infection means its only in a small area of the body, like a wound, cut or ulcer. Localised infection can become systemic if they spread.
1.5
There are many poor practices that can lead to the spread of infection, common practices not doone to the best as they should are, not washing your hands properly and thoroughly, not wearing PPE (personal protective equipment), not storing or cooking foods properly, not cleaning your surroundings, not covering your nose or mouth when sneezing or coughing.
2.1
Most micro-organisms need most of the things humans need to
1.1
Bacteria are a single cell micro-organism that can only be seen from under a microscope. It lives off the nutrients from its surroundings. Viruses are disease producing agents far smaller than bacteria, They are enclosed in a protein coating which makes them more difficult to destroy.
The basic unit of Fungi is a hypha which is a hollow tube. The hypha threads spread out over and into the food material making a visible mesh or mycelium. Some fungi form together to create toadstools. They spread by releasing spores into the environment. A parasite is an organism that lives on or in a host and gets its nutrients from or at the expense of its host. Parasites are different from bacteria or viruses because their cells share many features with human cells.
1.2
Bacteria
Food poisoning. (Salmonella)
Whooping cough
Tuberculosis
Tonsillitis
MRSA (Methicillin-resistant Staphylococcus aureus)
Viruses
Chicken pox
AIDS/HIV
Mumps
Common cold
Herpes
Fungi
Athlete foot.
Yeast infections
Ringworm
Thrush
Parasites
Tapeworms
Lice
Fleas
Lymes disease
Scabies
1.3
Colonisation occurs whenever any one or more species populate an area and infection is the invasion of body tissues by disease causing micro-organisms, their multiplication and the reaction of body tissues to these micro-organisms.
1.4
Systemic infection means that it is in the blood stream and spreading or has spread throughout the body. Localised infection means its only in a small area of the body, like a wound, cut or ulcer. Localised infection can become systemic if they spread.
1.5
There are many poor practices that can lead to the spread of infection, common practices not doone to the best as they should are, not washing your hands properly and thoroughly, not wearing PPE (personal protective equipment), not storing or cooking foods properly, not cleaning your surroundings, not covering your nose or mouth when sneezing or coughing.
2.1
Most micro-organisms need most of the things humans need to