Summary OCR A Level Biology- Pathogens and Communicable Disease Notes- all you will ever need.

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Pathogens and Communicable
Disease
What is disease?

A condition that impairs the normal functioning of an organism.

What is a pathogen?

An organism that causes disease. Types of pathogens include, bacteria,
viruses, fungi and protoctists ( a type of single-celled eukaryoktic
organism).

What type of pathogen is reponsible for Tuberculosis TB?
Bacterium. Affects animals, (mainly humans and cattle).

What type of pathogen is reponsible for Bacterial meningitis?

Bacterium. Affects humans.

What type of pathogen is reponsible for Ring rot?
Bacterium. Affects potatoes and tomatoes.

What type of pathogen is reponsible for HIV/AIDS?

Virus. Affects Humans

What type of pathogen is reponsible for Influenza?
Virus. Affects animals.

What type of pathogen is reponsible for Tobacco mosaic virus TMV?

Virus. Affects plants.

What type of pathogen is reponsible for Black sigatoka?

Fungus. Affects banana plants.

What type of pathogen is reponsible for Ringworm?

Fungus. Affects Cattle.

What type of pathogen is reponsible for Athletes's foot?


Pathogens and Communicable Disease 1