communicable diesease Flashcards
(13 cards)
What is a communicable disease?
A disease that can be transmitted from one organism to another.
What is a pathogen?
A microorganism that causes disease.
Name four types of pathogen.
Bacteria, fungi, protists, viruses.
How can pathogens spread?
Air, water, direct contact.
How do bacteria make you ill?
Produce toxins that damage tissues.
How do viruses make you ill?
Reproduce rapidly inside cells, damaging or destroying them.
Name three examples of viral diseases.
Measles, HIV, tobacco mosaic virus.
Name two examples of bacterial diseases.
Salmonella, gonorrhoea.
Name four methods of controlling the spread of communicable disease.
Good hygiene, isolating infected individuals, controlling vectors, vaccination.
Describe an example of a protist disease.
Malaria - caused by a protist pathogen that is spread from person to person by mosquito bites, and causes recurrent fevers.
Describe an example of a fungal disease in plants.
Rose black spot - spread by water and wind, and affects plant growth by reducing a plant’s ability to photosynthesise.
How can the cause of a plant disease be identified?
Gardening manuals and websites, laboratory testing, monoclonal antibody kits.
How can plant diseases be detected?
Areas of decay, discolouration, growths, malformed stems or leaves, presence of pests, spots on leaves, and stunted growth.
