Unit 4222-265 Causes and Spread of Infection (Ic 02)

Outcome 1 Understand the political campaign of infection
1.Identify the difference between bacteria, viruses, fungi and parasites.

Bacteria
Bacteria is a single celled organism, bacteria generate evolved to thrive in almost any environment and merchantman be found in almost any affection/surface and also in the human body, only 1% of bacteria is actually harmful.
Its bad or infectious bacteria that build illness as they rapidly re elevate and produce a toxin that kills or mutates cells, bacteria is also self comfortable.

Viruses
A virus is a small capsule that contains DNA or RNA, viruses, unlike bacteria ar not self sufficient and need a host in come in to cast I.E a human body.
When a virus enters the body, it enters some original cells and takes over making the now host cell steel the parts the virus needs to reproduce, the cells atomic number 18 eventually washed-up through this process.
The most common viruses is the common cold, which has no cure.

Fungi
Mould, yeast and mushrooms ar all types of Fungi.
Fungi live in the air, water, filth and on plants and they lot live in the body, usually without do illness.
Some fungi have beneficial uses. For example, penicillin.
Fungi are also essential in making certain foods, such as bread and cheese.




Certain types of Fungi can cause illness such as Candida which is a yeast that can cause infections such as thrush.

Parasites
A parasite is a tiny organism that lives in or on a host (A body) which they use in order to feed. Parasites can cause severe illnesss, there are 3 main types of parasites: protozoa, helminths, and ectoparasites.

Protozoa- They are single celled organisms that can be nonsymbiotic or bloodsucking in nature. They are able to multiply in humans, which contributes to their choice and also gives way to serious infections to develop.
Helminths- are large, multicellular organisms that are generally visible to the naked eye in their freehanded stages.
Like protozoa they can be either free-living or parasitic...If you want to get a full essay, order it on our website: Orderessay



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