For instance, Lactobacillus acidophilus — a harmless bacterium that resides in your intestines — helps you digest food, destroys some disease-causing organisms and provides nutrients. Many disease-causing bacteria produce toxins — powerful chemicals that damage cells and make you ill. Bacteria can multiply very rapidly if given the right environment. Viruses are much smaller than cells. In fact, viruses can only be seen by electronic microscope. To reproduce, viruses invade cells in your body, hijacking the machinery that makes cells work.
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.
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.
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.
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.
Disease Yersinia pestis The Plague Jesus Urquijo Biology 113 Lab March 18, 2013 Microbes are what make the world what it is today. They are found in nearly every environment on earth. Each species has its own way of getting nutrients and adapting to its environment, such as pH, aerobic and anaerobic conditions, and enzymes that are essential for optimum living. The majority of bacteria living on earth are harmless if not beneficial to the human race, but those few microbes that are harmful to humans are those that cause disease. They are referred to as pathogens and need to be observed so we can prevent the spreading of disease caused by those particular microbes.
They can survive with without a host. Vaccinations have a weakened virus in them to stimulate the bodys defenses. Parasites have a nucleus and share many the same features of a human cell. Fungus also have a nucleus. They are commonly found as spores and molds in the environment and as yeast in humans.
Some are unicellular and some are multi cellular. Bacteria is a large group of single celled organisms that are found in every corner of the earth, be it land, air or water. Viruses are parasites which means they can cause harmful diseases such as small pox. (www.sciencedaily.com/articles/m/microorganism.htm) Algae are another diverse group of plants that may be unicellular or multi-cellular but are autotrophic. Diatoms are type of algae , found in toothpaste, they can be classified into two groups called centric and pennate.
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.
Causes and Spread of Infection 1. Understand the causes of Infection 1.1 Identify the differences between bacteria, viruses, fungi and parasites The differences between bacteria, viruses, fungi and parasites range. One of which is the fact that viruses and parasites depend upon a living host to survive, while bacteria and Fungi's don't always need to do so. Another difference is that Parasites are normally living creatures - ticks, fleas, worms - whilst bacteria, viruses and fungi are cells that have different cell coatings. 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.