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.
Identify the differences between bacteria, viruses, fungi and parasites Answer: Bacteria Bacteria are single-cell microorganisms which generally exist in large numbers and are microscopic in size. Bacteria can be either beneficial (bacteria in the intestinal tract aid digestion and are part of the normal body flora) or can be the cause of disease (for example pneumonia, food poisoning or bacterial meningitis). Viruses A virus is an infectious agent which can only live and replicate inside organism cells. The main difference between viruses and bacteria is that they are unable to reproduce in food – they need a living host cell to replicate. They replicate by infecting and taking over the functions of the host cell.
1.1 Identify the differences between bacteria, viruses, fungi and parasites. Bacteria: A bacteria is a single celled organism, they are either a parasite or live independently. Bacteria have three basic shapes. Antibiotics can usually kill them; A few examples of bacteria could be meningitis, Ear infections, and conjunctivitis. Fungi :A Fungus is a spore producing organism and can live as a single celled yeast or as a larger multi-cellular mould.
Crohn’s disease can affect any area of the gastrointestinal system from the mouth to the anus. Crohn’s disease appears to be caused by a dysfunctional inflammatory response in the gastrointestinal tract. Inflammation is the body’s natural way to heal by sending immune cells to the site of the injury or invader. Researchers
Outcome 1 Understand the cause of infection 1.Identify the difference between bacteria, viruses, fungi and parasites. Bacteria Bacteria is a single celled organism, bacteria have evolved to thrive in almost any environment and can be found in almost any substance/surface and also in the human body, only 1% of bacteria is actually harmful. It's bad or infectious bacteria that cause illness as they rapidly reproduce and produce a toxin that kills or mutates cells, bacteria is also self sufficient. Viruses A virus is a small capsule that contains DNA or RNA, viruses, unlike bacteria are not self sufficient and need a host in order to reproduce I.E a human body. 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.
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.
Andrew Hodgkiss Unit 22 Information sourced from various sites on the Internet. Bacteria, viruses, fungi, and parasites: The first bacteria a usual size is but a few micrometers in length shapes ranging from spheres to rods and spirals. Bacteria are present in most of the Earths habitats such as soil, water, acidic hot springs and radioactive waste also, found in/on animals and plants. Some bacteria are beneficial to human existence others can be fatal in developed countries antibiotics are used to treat bacterial infections. Viruses are small infectious agents that replicate only inside the living cells of other organisms, Viruses infect all types of life forms from animals, plants and bacteria.
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.
Causes and spread of infection 1. Understand the causes of infection 1. Identify the differences between bacteria, viruses, fungi and parasites Bacteria is living things that are neither animals or plants but a group that belongs to themselves. Bacteria are prokaryotic microorganism, which is a single cell that doesn’t contain nucleus. Viruses are a small infectious agent that can multiply only inside living cells of organisms.
Chronic inflammation that accompanies this disease can lead to the formation of ulcers. Ulcers are open sores that are characterized as deep with defined borders in Crohn’s patients. Again because the disease can affect the entire GI tract, the ulcers can form in the mouth all through to the anus. Fistulas can form from ulcers extending through the intestinal wall. Fistulas are abnormal connections between different parts of the intestine or another organ.