They replicate by invading targeted cells of their host and taking over genetic material responsible for reproduction. These are tiny infectious agents that are so small that even a light microscope will not detect them visibly, infecting all kinds of cells from bacteria, fungi, plants, animals and humans. Some of their common illnesses and infections include colds, influenza, chicken pox, measles, mumps, herpes, norovirus and cold sores. Fungi are simple plant like single-celled organisms, reproducing both sexually and asexually via spores. They take on various forms and can include yeast and moulds.
Understanding the causes and spread of infection The differences are that bacteria are an organism which produces toxins which grow and then divide. Virus - are smaller than a cell. It can't reproduce outside the cell unlike bacteria, so they invade the cells and inject the genes into the nucleus and creates copies of itself Fungi - causes disease by absorbing nutrients, and producing toxins Bacteria, fungi and viruses are all separate entities and are completely different from each other. Parasites, however, can refer to a number of different things including bacteria, fungi and viruses. A parasite is any organism which lives inside a different organism in a symbiotic relationship in which only the parasite benefits from the symbiosis.
1.2 Identify common illnesses and infections caused by bacteria, viruses, fungi and parasites. Caused by bacteria: - Tuberculosis - Whooping cough - Food poisoning - Ear infections Caused by viruses: - HIV - Hepatitis B - Stomach Flu - Warts Caused by fungus: - Thrush - Ringworm - Yeast infection - Valley fever Caused by parasites: - Malaria - Schistosomiasis - Sleeping sickness 1.3 Describe what is meant by infection and colonisation. Infection is the invasion and multiplication of micro organisms that are not normally present within the body. Infection tends to show through symptoms. Colonisation is when germs are within the body but don't make the person sick.
uses of infectionCauses and Spread of Infection 1.1 viruses....are a coated material that invade the cells apparatus for reproduction, Bacteria......are single celled organisms; some classify them as a separate {FOURTH} kingdom of the tree life Fungi.......are multi celled organisms that form a third kingdom of life along with the plant kingdom and the animal Parasites.....are plants or animals that derive from the metabolism of other plants or animals at the expense of the host and without providing some benefit to the host 1.2 common illnesses caused by Bacteria.....uti’s an tb Fungi.....Thrush, Athletes foot Viruses....Aids, Measles Parasites....malaria, tape worm 1.3 Infection is an invasion of cells that can cause harm. Colonisation is the invasion of cells that cause harm. 1.4 Systemic....is an infection that has gone into the blood stream. Localised infection....is in one place of your body. 1.5 poor hand hygiene can lead to the spread on infection.
There are many ways bacteria can enter the body. Expired, contaminated or non pasteurised food items could be one way. Cuts, sores and open passages such as eyes, ears, genitals etc are also ways in which bacteria can enter the body. Some of the illness and infections attributed to bacteria include e.coli, streptococcus (strep throat, impetigo, cellulites), staphylococcal (skin infection, pneumonia, food and blood poisoning), cholera, mrsa, typhoid, uti’s, dysentery and tuberculosis. Bacterial infections are commonly treated with antibiotics.
Abscess: localized collection of pus Infections associated with traumatic injuries, such as animal or human bites, burns, cuts, frostbite, or penetration of foreign objects. Many organisms are capable of causing infection in wounds. Incisions, Punctures, Lacerations, Contusions, Abrasions, Gunshot wounds, Burns Tissue components: Collagen, Finbronectin, Fibrinogen, Fibrin Anaerobic wounds Staphylococcus, Streptococcus, Pseudomonas aeruginosa, Clostridium species 1. Staphylococcus aureus& Staphylococcus epidermidis : pyogenic cocci, inflammatory reaction causes swelling, redness, pain, infection can become systemic Toxic shock syndrome: fever, muscle aches, shock, diarrhea. Toxin produced is responsible for the infection Staphylococcal toxins can also act as superantigens Cleaning and removal of dirt reduces rates of infection Antibiotics, resistant strains 2.
Viruses can spread in many ways. Viruses in plants are often transmitted from plant ot plant by insects that feed on them. Viruses in animals can spread by blood sucking insects. Influenza viruses are spread by coughing and sneezing. Norovirus is transmitted faecal oral route and are passed from person to person contact, entering the body in food or water.
It is completely dependent on the host. 1.2 The common illnesses caused by bacteria, viruses, fungi and parasites are: Bacteria – E.coli, Salmonella, Tetanus, Tuberculosis. Viruses – Chicken Pox, Polio, Ebola, HIV/AIDS.
Bacteria is a single-celled microorganisms that cause diseases. Examples of bacteria are salmonella, campylobacteriosis, clostridium, and tularemia. Feline viral respiratory disease is a severe contagious illnesses of cats that spread fast in a multicat home. The fungi family comprises of mushrooms living in soil and biological material, most types of fungi are spread by airborne spores. “Rickettsia is a disease-causing parasites that are carried by fleas, ticks, and lice.
The common way of treating a virus is through immunization as anti-biotics will not be effective against viral infections. The virus infection can cause things like the Influenza, common cold, stomach flu, pneumonia, blood born infections, ear infections and HIV/AIDS. Fungi- live in the air, water, soil and on plants and they can live in the