1.1 Identify the differences between bacteria, viruses, fungi and parasites.
Bacteria, fungi and parasites are all considered as ‘living’ things,.
Bacteria are single celled microorganisms that can only been seen through a microscope, they collect their nutrition from their surrounding and unlike viruses, they do not need a living host to reproduce.
Viruses are difficult to destroy because they are enclosed in a protein coating. Viruses are disease-producing agents, far smaller than bacteria. Viruses are not considered as living because they are unable to reproduce.
Fungi are placed into the plant category although they are very different from green plants. The basic part of fungus is a hollow tube, which is known as ‘hypha’. Fungi spread by releasing spores into its surroundings.
Parasites are an organism that feeds and is dependent of its host.
1.2 Identify common illnesses and infections caused by bacteria, viruses, fungi and parasites.
Common illnesses and infections caused by bacteria include; Bacterial meningitis, Gonorrhea, Impetigo, Lyme disease, MRSA infection, Scarlet fever, Tuberculosis, Typhoid fever, and Urinary tract infections.
Common illnesses and infections caused by viruses include; AIDS, Chickenpox, Common cold, Hand, foot, and mouth disease, Viral hepatitis, Influenza (Flu), Measles, Mumps, Rabies, Smallpox, Viral meningitis, and Viral pneumonia.
Common illnesses and infections caused by fungi includes; Pneumocystis pneumonia, Fungal meningitis, Candida infection, Ringworm, and Athlete’s foot.
Common illnesses and infections caused by parasites include; Malaria, Scabies, Stomach and gut worms (Threadworm, hookworm), and Hair and body lice (Head and crab lice).
1.3 Describe what is meant by ‘Infection’ and ‘colonization’
Infection means that the body is being invaded by bacteria, viruses and parasites that are not usually there, these are known as microorganisms.