In fact only 1% of bacteria are harmful. Viruses can only grow inside the cells of living organisms. They are not living in their own and in that way are different to bacteria, parasites and fungi. All living organisms can contract viruses: humans, plants, fish and animals. Viruses are spread from host to host.
They draw nourishment and other needs from their host organism. Parasites that cause infection and disease are known as Pathogenic parasites Identify common illnesses and infections caused by bacteria, viruses, fungi and parasites Virus Common cold, flu, mumps, measles, Chicken pox, Cold sores, HIV,
Parasites survive by feeding from its host. 1.2 Bacteria, common illnesses caused by bacteria are MRSA, Salmonella, Legionnaires disease, food poisoning, Pneumonia and Bronchitis. Viruses, common viruses are A common cold, measles, chicken pox and HIV. Fungi, common fungi are, Athletes foot, Ringworm and yeast infection. Parasites, common parasites are, Malaria and worms.
1.2 Identify common illness and infections caused by bacteria, viruses, fungi and parasites. Viral and bacterial infection Viruses: Viruses can affect many different parts of the body or more than one body system at the same time for example a runny nose, sinus congestion, cough or body ache. Viruses can cause the classic common cold or even the flu, much
They are contained in a protein coating which makes them more difficult to destroy. Virus cells are shaped like rods, spheres or tiny tadpoles. They reproduce by invading cells in our body. Viruses can be more serious and are responsible for causing a variety of diseases for example, Norovirus, AIDS, HIV, influenza, small pox and measles. There are different types of fungi for example mushrooms are a fungi and some cheeses have fungi in them, however fungi can also cause illnesses such as Candida, this is yeast that causes infection.
Unit 4222-265 Causes and spread of infection (ICO2) Understand the causes of infection 1. The differences between bacteria, viruses, fungi and parasites Bacteria belong to a group of single celled microorganisms which are classified as prokaryotes i.e. they do not have membrane bound organelles. They have no true nucleus as the DNA is not contained within a membrane or separated from the rest of the cell, but is coiled up in a region of the cytoplasm called the nucleoid and the cell is surrounded by a cell wall an outer covering that protects the bacterial cell and gives it shape. Viruses are infectious agents, often highly host-specific, consisting of genetic material surrounded by a protein coat.
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 illness's, there are 3 main types of parasites: protozoa, helminths, and ectoparasites. 2. Bacteria salmonella(food poisioning) e.coli causes abdominal pain,cramps and diarreha Staphylococus found on skin Mrsa responsible for many infections. Viruses common cold,flu mumps and measles.
CU254 - CAUSES AND SPREAD OF INFECTION - Kathryn Denton 1.1 bacteria - neither plant/animal are a group of there own, very small, normally millions of them they multiply and are a single cell with NO nucleus Virus- small infectious agent, can only replicate inside living cells of organism, have genes of DNA or RNA Fungi- multicellular micro organisms including yeasts & moulds. used for making ABx. essential in decomposition Parasite- is an organism that lives on or in another organism to the detremenet of the host. feeds off host 1.2 Bacteria - URTI, pneumonia Viruses , common cold, HIVFungi - nail infection, candida infections Parasites - Ringworm, Tic born encephalitis 1.3 Infection - invasion of the body by a foreign substance Colonisation - is when a bacterial strain invades a region of your body and starts to rapidly divide - it sets up a new colony 1.4 Systemic infection - means that the infection is throughout your body. This usually means that the bacteria have been able to invade either your circulatory system or the lymphatic system and spread.
1.2 Identify common illnesses and infections caused by bacteria, viruses, fungi and parasites The most common illnesses and infections that occur due to bacteria, viruses, fungi and parasites are Dioreah, Vomiting, Influenza, Nail infections, Tick bites, Colds, Skin Conditions, Digestive Problems ( Parasites - Worms ) and in some cases, Death. 1.3 Describe what is meant by “Infection” and “Colonisation” As defined by : www.freedictionary.com INFECTION Invasion by and multiplication of pathogenic microorganisms in a bodily part or tissue, which may produce subsequent tissue injury and progress to overt disease through a variety of cellular or toxic mechanisms. This means that Infection is the process of infecting or being infected. COLONISATION A mass of microorganisms in a culture that originates from a single cell. This means that when either a Virus, Bacteria, Fungi or parasites in the single form, gather and join to make one mass of either Virus, Bacteria, Fungi or parasites.
P1: Explain how infections are caused by different pathogens: * Bacteria * Fungi * Protozoa * Parasites * Viruses Bacteria: Pathogens are microorganisms such as viruses or bacteria and these cause diseases in the body. Bacteria is a pathogen and are microscopic living cells that multiply at a rapid speed, once inside the body they spread toxins making the individual ill. Bacteria can cause diseases such as; * food poisoning * cholera * typhoid * whooping cough * gonorrhoea - a sexually transmitted disease Bacteria can travel in many things such as food, water or even through the air. For example if an individual is sitting next to someone that keeps on sneezing, the individual will eventually