Causes and spread of Infection 1. Understand the causes of Infection 1.1 Identify the differences between bacteria‚ viruses‚ fungi and parasites More accurately‚ parasites are actual animals‚ along with mites‚ and mites are so small you have some thousands living in your eyebrows. Bacteria are one cell things with a cell wall. Virae (viruses) are code only--they are the core requirement that bacteria have‚ but without all the other protective layers like cell wall and energy production. Instead
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Causes and Spread of Infection 1.1/1.2 | Features | Illnesses Caused | Bacteria | Can be helpful‚ can be an aid in digestion‚ able to break down sewage‚ can be used in food (yoghurt)‚ affects odour‚ taste and texture. Needs nutrients‚ pH‚ time‚ temperature‚ +/- Oxygen and water activity to grow. | Lyme disease‚ Tuberculosis | Viruses | Exist only to replicate‚ need a host‚ infect all types of cells‚ found in soil‚ water and air. | Hepatitis A‚ Norovirus‚ Measles‚ Mumps | Parasites | Need
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CU254 Causes and Spread of Infection 1.1Identify the differences between bacteria‚ viruses‚ fungi and parasites. Bacteria – bacteria are extremely small singular organisms which are found almost everywhere. Viruses – it is a coated genetic material that invades cells and use’s the cells apparatus for reproduction. Fungi – it is a multi-celled living organism Parasites – they are types of living plants and animals that derive benefit from the metabolism of other animals and plants. 1.2 Identify
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1. understand the causes of infection 1.1 bacteria - neither plant/animal. are a group of there own. very small‚ normally millions of them. multiply ++. single cell with NO nucleus Virus - small infectious agent‚ can only replicate inside living cells of organism‚ have genes of DNA or RNA Fungi - multicellular micro organisms including yeasts & moulds. used for making ABx. essential in decomposition Parasite- is an organism that lives on or in another organism to the detremenet of the host
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CU254 Causes and spread of infection. 1.1 Viruses are pieces of nucleic acid wrapped in a thin coat of protein that replicate only within cells of living host. Bacteria are one cell micro-organisms with simple cellular organizations whose nucleus lacks a membrane. Parasites may be protozoa‚ yeast or multi cellular organisms such as fungi or worms that live in or on a host to obtain nourishment without providing any benefit to the host. Fungi there are many different varieties of fungi‚ and
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IC02 Causes and spread of infection The difference between bacteria‚ viruses‚ fungi and parasites are: Viruses are coated genetic material that invade cells and use the cell’s apparatus for reproduction. Bacteria are single celled organisms. Some classify them as a separate (fourth) kingdom on the tree of life. 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
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Causes and spread of infection Micro-organisms that cause infections are known as pathogens. They may be classified as follows: Bacteria: minute organisms about one-thousandth to five-thousandths of a millimetre in diameter. They are susceptible to a greater or lesser extent to antibiotics. Viruses: much smaller than bacteria and although they may survive outside the body for a time they can only grow inside cells of the body. Viruses are not susceptible to antibiotics‚ but there are a few
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Unit 265 Causes and spread of infection. Outcome 1 Understand the causes of infection 1. Identify the difference between bacteria‚ viruses‚ fungi and parasites? The difference between bacteria‚ viruses‚ fungi and parasites is: 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
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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. Fungi can be multicellular or single celled
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Unit 22 Causes and spread of infection 1.1 Identify the differences between bacteria‚ viruses‚ fungi and parasites. · Bacteria- Are one cell microorganisms with a simple cellular orgaization who necleus lacks a menbrane. · Viruses- peices of nucleic acid (DNA or RNA) wrapped in a thin coat of protein that replicate only within the cells of living hosts. · Parasites- can be protazoa‚ yeasts or multicellular organisms such
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