There are several types of parasites such as Ectoparasite- which is a parasite that lives on the host’s surface, examples will be hair and body lice and mites. Endoparasites – One that lives inside the host, for example heartworm, tapeworm and flatworms. Epiparasite- This one feeds on another parasite. For example, fleas and ticks. 1.2 Identify common illness and infections caused by bacteria, viruses, fungi and parasites.
Causes and spread of infection Bacteria is a living thing that has only one single cell. It can survive inside and outside our bodies, in temperatures both above boiling and below freezing point. Many bacteria’s are harmless and essential to humans in terms of digesting food and helping to destroy cells that can cause disease. However some bacteria’s can make you ill, this is because they produce toxins that can damage tissues and surrounding cells. There are many ways bacteria can enter the body.
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.
All viruses have genes made from either DNA or RNA, long molecules that carry genetic information, all have protein coats that protect these genes and some have an envelope of fat that surrounds them when they are outside a cell. FUNGI Fungi or worms that live in or on a host to obtain nourishment without providing any benefit to the host fungi. There are many different varieties of fungi, and we eat quite a few of them mushrooms are fungi, as is the mould that forms the blue or green veins in some types of cheese. Also, yeast is another type of fungi and a necessary ingredient in bread .Few serious fungal diseases occur in the U.K., so you are highly unlikely to come across any that can cause serious illness
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.
1.1 identify the differences between bacteria, viruses, fungi and parasites Bacteria are living things which are neither plants or animals, but belong to a group by themselves. They are small, not more than one cell, but there are normally millions of them together. Virus is a small infectious agent that can replicate only inside the living cells of organisms. All viruses have genes made either from DNA or RNA, long molecules that carry genetic information. Fungi are Eukaryotes when compared to bacteria and fungi.
Some bacteria can fight off harmful bacteria helping to prevent illness. Viruses are a small infectious agent that replicates only the inside of living cells of other organisms. Viruses can infect all types of life forms, from animals to plants to micro organisms. Most viruses are too small to be seen with an optical microscope. Viruses can spread in many ways.
A parasite is any organism which lives inside a different organism in a symbiotic relationship in which only the parasite benefits from the symbiosis. This means that a parasite basically feeds off a host and the host suffers as a result of this. Parasites can be as small as viruses, or as big as metre-long tapeworms. The common illness and infections caused by bacteria, viruses, fungi and parasites are Pneumonia, Diarrhoea, Urinary infections, colds These are just a few of the common illness and the list can go on. what is meant by “infection” and “colonisation”?
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.
9/13/12 Helminthic Worm Infections Helminthic worm infections are also known as Nematode infection or parasitic worm infection. Parasites are creatures that invade a host, attach themselves externally and internally to tissues and organs, and rob the host of nutrients. They are classified into two groups; nematodes, known as the roundworm and platyhelminth, known as tapeworms and flukes. Some parasites, such as certain worms, eventually weaken and cause diseases in their hosts. Parasitic worms are common in Africa, Asia, Central and South America, and are rarer in countries where sanitation is practiced.