Parasites can cause disease in humans. Some parasitic diseases are easily treated and some are not. The burden of these diseases often rests on communities in the tropics and subtropics, but parasitic infections also affect people in developed countries. Bacteria, fungi and viruses are all very different from one another. A big
E.g. staphylococcus, clostridium difficile Viruses: Viruses are made up from DNA or RNA, long molecules that carry genetic information. Most are covered in a protein coating to protect the genetic information. It is a small infectious agent that can only replicate inside the cells of living organisms. Most viruses are too small to be seen with a light microscope.
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.
Outcome 1 Understand the causes of infection 1. Identify the differences between bacteria, viruses, fungi and parasites Bacteria are one-cell microorganisms with a single cellular organization, bacteria can reproduce from the life cycle and can be killed by antibiotics. Viruses are pieces of nucleic acid (DNA or RNA) wrapped in a thin coat of protein that replicate only within the cells of living hosts, viruses are smaller than bacteria and can’t be killed by antibiotics. Fungi are a member of a large group of eukaryotic organisms that includes microorganisms (eg. Moulds, yeasts), as well as more familiar mushrooms.
Cause and Spread of Infection 1. Understand the Causes of Infection 2.1 Identify the Differences Between Bacteria, Viruses, Fungi and Parasites Viruses are extremely small pieces of nucleic acid that are surrounded by a thin protein coat. They are different from other infectious microorganisms because they cannot replicate outside of a living host cell. They synthesize energy from their host cell and do not have a cell membrane, cell wall or cell nucleus. They have genes but lack a cellular structure.
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.
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.
Unit 20 – Causes and Spread of Infection 1.1 Identify the differences between bacteria, viruses, fungi and parasites. Bacteria are microbes with a single cell. There is no nucleus or membrane within bacteria, making its structure simpler than that of other organisms. Instead, the genetic information is contained in a single loop of DNA. Viruses are microscopic organisms consisting of genetic material surrounded by proteins, lipids, or glycoprotein coats.
They cause disease in humans, some are easily treated and some are not. Malaria is a disease caused by a parasite. An infection is caused when another organism gets into a persons body and causes it harm. Colonisation is when a person is infected, but shows no signs of infection, but can still pass on the infection. A systemic infection is an infection that infects lots of organs or the whole body.
Identify the difference between bacteria, viruses, fungi and parasites The difference between bacteria, viruses, fungi and parasites is; bacteria is a one-cell micro organism that can multiply very fast; viruses are small cells that can only reproduce on a living host; fungi is a cell that lives on a dead organic material so that it can grow and get nourishment. Identify common illnesses and infections caused by bacteria viruses, fungi and parasites Bacteria staphylococci (MRSA) which lives on the skin can cause different infections with people that have low emun system Viruses hepatitis (A-E) is where damage to your liver means a virus can start and reproduce causing different effects to the body depending on what type of virus it is. Fungi candidiasis which is a build up of yeast in the body such as athlete’s foot. Parasites scabies this is where a skin mite is passed on by direct contact from another person. The skin mite then can lay eggs within the skin causing a rash and very itchy skin.