Causes and Spread of Infections
Paige Edwards
Unit 4222-265
Causes and spread of infection
outcome 1- to understand the causes of infections identify the differences between bacteria, viruses, fungi and parasites.
1) Bacteria is a organism that is present in most habitats, as well as human bodies and other living organisms such as plants and animals. Bacteria multiplies by its self to progress and spread. Unlike other infections such as viruses, fungi or parasites bacteria is not always harmful in fact in many cases bacteria can be useful to the living organisms,habitats or plants that it infects. Viruses are a small infectious agent that can only multiply inside the cells of living organisms although unlike bacteria, fungi and parasites viruses are not living organisms. Viruses can infect any living organism such as humans, plants and animals. Viruses multiply by spreading from organism to organism for example viruses can be spread from human to human by coughing or sneezing. Fungi a fungi is a member of a large group of eukaryotic organisms this means that each of the cells contain membranes. Fungi can be identified through mushrooms, toadstools and yeast. Common yeast infections that are found within the human body are infections such as thrush which can be overcome by a course of anti-biotics. parasites are small organisms which depend on other living organisms to survive such as headlice depend on the blood from humans in order to survive and reproduce. Bacteria and viruses could both be parasites.
2) identify common illnesses and infections caused by bacteria,fungi,viruses and parasites. bacteria | Fungi | viruses | Parasites | mrsa ear infections gonorrhoea pneumonia
TB
whooping cough | thrush ring worm athletes foot | aids
HIV
colds chickenpox warts | headlice fleas diahreha malaria |
3) Describe what is meant by infection and colonisation.
Infection is a word which is used to describe when organism’s bodily tissues are damaged or infected
Unit 4222-265
Causes and spread of infection
outcome 1- to understand the causes of infections identify the differences between bacteria, viruses, fungi and parasites.
1) Bacteria is a organism that is present in most habitats, as well as human bodies and other living organisms such as plants and animals. Bacteria multiplies by its self to progress and spread. Unlike other infections such as viruses, fungi or parasites bacteria is not always harmful in fact in many cases bacteria can be useful to the living organisms,habitats or plants that it infects. Viruses are a small infectious agent that can only multiply inside the cells of living organisms although unlike bacteria, fungi and parasites viruses are not living organisms. Viruses can infect any living organism such as humans, plants and animals. Viruses multiply by spreading from organism to organism for example viruses can be spread from human to human by coughing or sneezing. Fungi a fungi is a member of a large group of eukaryotic organisms this means that each of the cells contain membranes. Fungi can be identified through mushrooms, toadstools and yeast. Common yeast infections that are found within the human body are infections such as thrush which can be overcome by a course of anti-biotics. parasites are small organisms which depend on other living organisms to survive such as headlice depend on the blood from humans in order to survive and reproduce. Bacteria and viruses could both be parasites.
2) identify common illnesses and infections caused by bacteria,fungi,viruses and parasites. bacteria | Fungi | viruses | Parasites | mrsa ear infections gonorrhoea pneumonia
TB
whooping cough | thrush ring worm athletes foot | aids
HIV
colds chickenpox warts | headlice fleas diahreha malaria |
3) Describe what is meant by infection and colonisation.
Infection is a word which is used to describe when organism’s bodily tissues are damaged or infected