Viruses: Viruses are microscopically small and are the simplest microbiological entity. A virus is not an independent living organism and needs a host cell to replicate. They are sub-microscopic parasitic particles of nucleic acid (RNA or DNA) that are wrapped in protein. Viruses are immune to antibiotics and are spread in the air or by direct contact. They can lead to serious or sometimes deadly diseases, such as AIDS.
They live on or in their host for an extended period of time. Fungi comes in many different forms, some of which we eat (such a yeast and mushrooms). Other forms include moulds. Some forms of fungi can cause serious harm to humans. 2.2 Identify Common Illnesses and Infections Caused by Bacteria, Viruses, Fungi and Parasites * Bacteria – Salmonella, E-coli, tetanus, typhoid fever, cholera * Virus – Aids, common cold, cold sores, influenza * Fungi – Athletes Foot, candidoses, ringworm * Parasites – Ticks, fleas, lungworm 2.3 Describe what is Meant by ‘Infection’ and ‘Colonisation’ Infection is the invasion of a living host’s bodily tissue by disease causing organisms that multiply in the body and cause illness.
They have no internal membranes, no nuclear membrane, no endoplasmic reticulum, no mitochondria and no Golgi body. They do however have a cell wall but it is not made of cellulose. Protoctists are mostly small eukaryotic organisms, with membrane bound organelles and a nucleus, with a nuclear membrane. In this kingdom organisms such as algae, water moulds, slime moulds and protozoa are found. Fungi are also eukaryotic.
Moulds, yeasts), as well as more familiar mushrooms. One major difference from other organisms like: plants, animals, bacteria, etc., is that fungal cells have cell walls that contain chitin. Fungi can be killed by antifungal medicine. Parasite is a plant or animal or fungi that lives on or in other organism called the host to obtain nourishment without providing any benefit to the host. Parasites may be protozoa, yeasts or multicellular organisms.
Most viruses are too small to be seen directly with a light microscope, All viruses have genes made from either DNA or RNA, When a virus enters the body, it enters some certain cells and takes over making the now host cell make the parts the virus needs to reproduce, the cells are eventually destroyed through this process. The most common viruses is the common cold, which has no cure. Fungi Mould, yeast and mushrooms are all types of Fungi, Fungi lives in the air, water, soil and on plants it can also live in the body, usually without causing illness. Some fungi have beneficial uses. For example, penicillin.
The name is derived from the spongy holes that are only visible under a microscope that develop in the affected brain tissue. The risk of getting Creutzfeldt-Jakob disease is very low and usually affects people over the age of 60. It cannot be transmitted through coughing, sneezing, touching, or sexual contact. There are three ways that you can get Creutzfeldt-Jakob disease. You can get it spontaneously, and most
Some fungi mass together to create toadstools. They spread by releasing spores into the environment. Parasites These are microorganisms that depend on other organisms for survival. Bacteria and viruses can be parasites. 1.2 Identify common illnesses and infections caused by bacteria, viruses, fungi and parasites Bacteria Lyme disease, Tuberculosis, tetanus, MRSA, whooping cough Viruses Polio, Norovirus, common cold, flu, chicken pox Fungi Ringworm, athletes foot, oral thrush Parasites Worms, ticks, lice, mites 1.3 Describe what is meant by 'infection' and 'colonisation' Infection Infection is the invasion on bodily tissues by disease causing microorganisms Colonisation Colonisation is when an invasion of disease or bacteria populate a specific area of the body which can cause the body's immune system to break down.
CU254- Causes and spread of infection 1.1 Bacteria- single celled organism essential for all life, parasites or live independently. They multiply themselves by cell division. Antibiotics can usually kill them. Examples of this is meningitis/ pneumonia Virus- Microscopically small and simplest micro biological. It is not an independent living organism it needs a host to replicate.
Changes in climate or introduction of a new species from elsewhere can greatly affect the balance of nature. Viruses: A virus is a small infectious agent that can replicate only inside the living cells of organisms. Most viruses are too small to be seen. Viruses infect all types of organisms, from animals and plants to bacteria . All viruses have genes made from either DNA or RNA, all have a protein coat that protects these genes; and some have an envelope of fat that surrounds them when they are outside a cell.
The purpose of this experiment was to determine the type of Staphylococcus (commonly referred to as Staph) that was isolated from the nose by performing a series of tests. Staph is a bacteria that is very often the cause of skin, stomach and blood infections. It is commonly found on the skin, but is easily disinfected with antiseptics or even soap and water. It is normally dealt with by the body's immune system pretty easily, and as such is very hard to catch directly from another infected person. However, Staph can enter the body through any opening (including cuts) and find its way into the bloodstream.