Communicable and non communicable diseases

2 types of diseases

Communicable

Non communicable

What is health

A state of physical and mental well being

What is a disease

A disorder which produces symptoms

What are pathogens

Microorganisms that cause infectious disease

4 types of pathogens

Virus

Fungi

Bacteria

Protist

What can communicable diseases be spread through

Air (pathogens can be carried in the air and then breathed in)

Contact (touching contaminated surfaces)

Water (drinking or coming into contact with dirty water)

What causes non communicable diseases

DNA

Lifestyle

Environment

3 examples of communicable diseases

Tuberculosis

Measles

Flu

3 examples of non communicable diseases

Cancer

CHD

Diabetes

Describe viruses

Very small

They move into cells and use the biochemistry of it to make many copies of itself

This leads to the cell bursting and releasing all of the copies into the bloodstream

The damage and the destruction of the cells makes the individual feel ill

Describe bacteria

Small

They multiply very quickly through dividing by a process called binary fission

They produce toxins that can damage cells

Describe protists

Some are parasitic, meaning they use humans and animals as their hosts (live on and inside, causing damage)

Describe fungi

They can either be single celled or have a body made hyphae

They can produce spores which can be spread to other organisms