A virus is a small infectious agent and can replicate only inside the living cells of an organism. Viruses can infect all types of organisms, from Animals, Humans Plants and even Bacteria by touch or air borne. Fungus or singular Fungi. Most fungi are inconspicuous because of the small size of their structures, and their lifestyles in soil, on dead matter, and after a long term relationship with plants, animals, or other fungi only becoming visible when reproducing. They also feed on many Bacteria in decaying matter organisms to survive.
Antibiotics have no effect on viruses. There are many 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. And yeast, another type of fungus, is a necessary ingredient in most types of bread. Other fungi can cause illness.
Causes and spread of infection Understand the causes of infection Outcome 1 Identify the differences between bacteria, viruses, fungi and parasites All 4 are different types of pathogens Bacteria is a single celled organism that multiply by themselves. They live within and on most living and non-living things. The majority of bacteria are harmless and beneficial to the human body but some can cause infectious diseases. A bacterium usually affects one part of the body and doesn’t spread across or through the body. Bacterial infections are normally treated with a course of antibiotics.
Unit 10 1:1 identify the differences between bacteria, viruses, fungi and parasites. Viruses With the exception of newly discovered prions, viruses are the smallest agents of infectious disease. Most viruses are exceedingly small (about 20 - 200 nanometers in diameter) and essentially round in shape. They consist of little more than a small piece of genetic material surrounded by a thin protein coating. Some viruses are also surrounded by a thin, fatty envelope.
Some of the most deadly diseases and devastating epidemics in human history have been caused by bacteria. Cholera Diphtheria Dysentery Plague Pneumonia Tuberculosis Typhoid Typhus VIRUSES A virus is a small infectious agent that replicates only inside the living cells of other organisms. Viruses can infect all types of life forms, from animals and plants to bacteria and archaea. The average virus is about one one-hundredth the size of the average bacterium. Most viruses are too small to be seen directly with an optical microscope.
1.1 Identify the differences between bacteria, viruses, fungi and parasites Bacteria are one celled organisms (not all of which are harmful). Some types of bacteria live and multiply in the environment whereas others are adapted to be inside human or animals hosts. Rates of multiplication can vary from minutes to months depending on the type of bacteria. Viruses are much smaller than cells and are basically just a capsule that contains genetic material. They have to invade cells and use the cellular machinery to live and reproduce.
They are even smaller then bacteria. They can’t multiply on their own so they have to invade a host cell and take over its machinery in order to be able to make more particles. They cannot reproduce without a host cell that’s what makes them unique organisms. Viruses consist of genetic materials (DNA OR RNA) surrounded by a protected coat of protein, liquid.Virsuses may lead to mild to severe illnesses in humans for example it can cause flu or a common cold to something more life threatening like HIV/AIDS.A virus can enter your body from a break in the skin or from inhaling it from the air we breathe in.Viruses are also immune to antibiotics. 1,1 Fungi is neither a plant nor an animal it is a member of a large group of eukaryotic organisms.
Bacteria usually reproduce via binary fission, a form of asexual reproduction where the bacteria replicates its DNA then divides itself into two identical cells. Unlike viruses, bacteria do not need a host cell (although they still need nutrients) to reproduce. Harmful bacteria are referred to as pathogens. These pathogens cause disease that usually start in a specific location but when left untreated, can cause septiceamia (the blood becomes infected and unusable by the body) which leads to shock and ultimately death. Most bacterial infections produce pus, a substance containing dead white blood cells.
Although you can have a flu vaccination there is currently no vaccination for a cold. Common fungi infections include athletes foot and ring worm. These can treated with creams or tablets. These infections usually present themselves as dry, itchy red patches of skin. They are divided into two different groups: yeasts and dermotophytes.
Many bacterial infections can be treated with antibiotics although some strains are now becoming resistant. We are also able to immunise against a wide range of bacterial diseases. A virus is a smaller micro-organism that needs a hosts living cell to reproduce. It is very difficult to kill a virus and antibiotics do not work of viral infections. Some of the world’s most serious and deadly diseases are viral.