B5 revision:Pathogens

Bacteria:

Small cells that reproduce rapidly in body

Makes you fee ill by producing toxins (poison) that damage your cells and tissues

Key words:

Pathogens

Non-communicable diseases

Communicable diseases

Diseases that can spread between individuals

Organisms that cause diseases

Diseases that can't spread between individuals

Viruses:

Can reproduce rapidly inside body

Lives inside cells and replicates to produce many copies of themselves

This cell then bursts releasing all the viruses

Protists:

Single celled eukaryotes

Some are parasites

Live on or inside other organisms and can cause them damage

Transferred to organism by vector

Vector

An organism that carries and transmits and pathogen from one host to another but doesn't suffer the disease the pathogen causes

Fungi:

Some are single-celled

Some made up of hyphae (thread like structure)

Hyphae can grow and can stick to human kin and surface of pants causing diseases

Hyphae can produce spores which can spread to other plants and animals

How they spread:

Drinking or bathing in dirty water

Infected bodily fluids(blood, vomit, saliva and faeces) of someone already infected with the disease

(Oral transmission)Swallowing water or food contaminated with a pathogen

Animal vectors

Airborne (carried in air) and can be breathed in