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.
Unit 265 Causes and spread of infection. Outcome 1 Understand the causes of infection Identify the differences between bacteria, viruses, fungi and parasites. Bacteria are a living organism that is found almost everywhere, in soil, water and even in the human body. Not all bacteria are harmful, and some bacteria that live in your body are helpful. For instance, Lactobacillus acidophilus — a harmless bacterium that resides in your intestines — helps you digest food, destroys some disease-causing organisms and provides nutrients.
Fungi are multi-celled organisms that form a third Kingdom of life, along with the plant kingdom and the animal kingdom. Parasites are plants or animals that derive benefit from the metabolism of other plants or animals at the expense of the host and without providing some benefit to the host in return. Bacteria is found in ever were and is able to adapt to its environment there is around 40 million bacteria in a gram of soil an d can live in either a symbiotic or parasitic relationship , and the human body controls bacteria by the use of anti-bodies in the blood system which makes the majority of bacteria harmless to use . 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
Some fungi have beneficial uses. For example, penicillin. Fungi are also essential in making certain foods, such as bread and cheese. Certain types of Fungi can cause illness such as Candida which is a fungi that can cause infections such as thrush. A parasite is a tiny organism that lives in or on a host (A body) which they use in order to feed.
Some fungi have beneficial uses. For example, penicillin. Fungi are also essential in making certain foods, such as bread and cheese. Certain types of Fungi can cause illness such as Candida which is a yeast that can cause infections such as thrush. Parasites A parasite is a tiny organism that lives in or on a host (A body) which they use in order to feed.
Localised infection~ Is where the pain can be pinpointed and is coming from the cause itself and the area that it homes at, this would be things like cuts/wounds to the skin or an ingrown toenail. 1.5 Poor personal hygiene, incorrect disposal of rubbish, waste, chemicals and clinical contamination, poor hand hygiene, not wearing P.P.E when needed, not storing or cooking foods properly, not complying with cleaning rotas, overcrowding when an illness is apparent, not following policies or reporting outbreaks or episodes of disease, direct contact with bodily fluids. 2.1 All organisms need different things to grow and thrive, they all need somewhere to grow for instance….. A host,
in nature, the bacteria can transfer these plasmids from bacteria to bacteria, transfering those beneficial genes. this mechanism allows bacteria to adapt to new and foreign environments. the continuous resistance of bacteria to antibiotics is due to the transmission of these plasmids. Bio-Rads unique pGLO plasmid encodes the gene for GFP and a gene for resistance the antibiotic ampicillin. pGLO can also control the gene expression of this fluorecent protein.
1.1 Identify the differences between bacteria, viruses, fungi and parasites Bacteria - a single cell micro-organism that gets its nutrition from its surroundings and can only be seen under a microscope. Viruses - are disease producing agents far smaller than bacteria. They are enclosed in a protein coating which makes them more difficult to destroy. Fungi – are included in the plant kingdom but are quite different from green plants. The basic unit of a fungus is a hypha which is a hollow tube.
In mutualism both species benefit; in commensalism one species benefits and the other is not affected; and in parasitism the parasite benefits and harms the host. 2. Prokaryotes engage in all three types of symbiosis with eukaryotes, e.g., Rhizobium is mutualistic with plants, bacteria living within the intestines and on the skin of humans are mostly commensal but some are mutualistic, e.g., anaerobic, fermenting, bacteria living within the female vagina create an acidic environment hostile to yeast and other fungi. C. Pathogenic prokaryotes cause many human diseases 1. To be pathogenic, a parasite must invade the host, resist internal defenses long enough to begin growing, then harm the host in some way.
c) Name 2 different methods of measuring pH of substances (in a laboratory)? • Probe and meter • Litmus paper 5. Explain the relationship between the natural pH of the skin and the action of: a) Microflora • The bacterial microflora on our skin are able to survive acidic conditions with a pH range 4-6. Our acidic skin protects us from harmful bacteria or pathogens, our microflora are able to breakdown the fatty acid molecules and thereby increase its