Unit 101 Level 2 Health and Social

BACTERIA- Bacteria is a living thing that is not an animal, plant or even a human, but they do belong to a group all by themselves. They are very small tiny individual cells. There are normally millions of them together at once. They can also multiply very fast.
VIRUSES- Viruses are a small infectious agent that can replicate only inside a living cells of organisms. Most viruses are far too small to see with the direct use of a light microscope. Viruses infect all types of organisms, from animals to plants and humans. All viruses have genes made from either DNA or RNA, long molecules that carry genetic information.
FUNGI- These are Eukaryotes, when compared to bacteria and viruses, like plants and animals. Fungal cell walls contain chattin and plant cell walls contain cellulose, the chattin adds rigidity and structural support to the thin cells of the fungus.
PARASITES-Parasites are an organism that lives on or inside another organism, this is to detriment of the host organism. These are various forms and types. A parasite is an organism that lives iside the host and then gets food from or at the expense of the host. Parasites can cause diseases in humans some of the diseases are easily treated and some cannot be treated at all.
Illnesses/infections caused by bacteria are salmonellosis, tuberculosis, MRSA, coccidiosis, food poisoning, dysentery, bronchitis, pneumonia, ghonorrea, syphilis, chlamydia.
Illnesses/infections caused by fungi are, valley fever, athletes foot, ringworm, yeast infection.
Illnesses/infections caused by viruses are, influenza, common cold, stomach flu, pneumonia, ear infections, HIV/AIDS, herpes, warts, dengue, west nile virus.
Illnesses/infections caused by parasites are, worms, schistosomiasis, malaria, sleeping sickness.
Colonisation- is when a bacterial strain invades a part of your body and then starts to rapidly divide, this sets up a new colony.
Infection- is similar but only usually used for opportunistic...