Flashcards in 4.1- Communicable diseases, prevention and the immune system Deck (60)
What is a communicable disease?
A disease which can be spread between organisms
What are three diseases which are caused by bacterium?
What are three diseases which are caused by viruses?
Tobacco mosaic virus
What are three diseases caused by fungus?
What are two diseases caused by protoctists?
Potato / tomato late blight
What is a pathogen?
An organism that causes disease
What are the four main types of pathogens?
What does tuberculosis affect?
Bacterium affects Animals, typically humans and cattle
What does bacterial meningitis affect?
Bacteria affects humans
What does ring rot typically affect?
Bacterium affect potatoes and tomatoes
What does HIV typically affect?
The virus affects humans
What does influenza typically affect?
The virus infect animals, including humans
What does tobacco mosaic virus typically affect?
The virus affect plants
What does black sigatoka typically affect?
The fungus affect banana plants
What does ringworm typically affect?
The fungus affects cattle
What does athlete's foot typically affect?
The fungus affects humans
What does potato/tomato late blight affect?
The Protoctist effect potatoes and tomatoes
What does malaria typically affect?
The protoctist affect animals, including humans
What is direct transmission?
When a disease is transmitted directly from one organism to another.
What three ways can a communicable disease be transmitted directly?
Touching an infected organism
What is indirect transmission?
When a disease is transmitted from one organism to another via an intermediate.
What are four examples of intermediates in indirect transmission?
Another organism (known as a vector)
What are two examples of diseases that can be transmitted directly?
HIV can be transmitted by sexual intercourse
Athlete's foot can be spread via touch
What are two examples of diseases that can be spread by indirect transmission?
Potato / tomato late blight is spread when spores are carried between plants
Malaria is spread between humans by mosquitoes which act as vectors
What three factors affect the transmission of communicable diseases?
Living conditions, climate, social factors
Give an example of how living conditions affect the spread of disease.
In overcrowded living conditions, Tuberculosis can spread easier as people will have more contact with each other
Give an example of how climate can affect the spread of disease.
-Potato/tomato late blight is common during wet summers because spores need water to spread
-Malaria is common in hot countries as these are ideal conditions for mosquitos to breed
How can social factors affect the spread of disease?
Good healthcare and good education can help prevent the spread of HIV by educating people.
How does tuberculosis cause harm?
It affects many parts of the body, killing cells and tissues