Unit Ic02 Questions And Answers

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Unit IC02 Causes and spread of infection 1.1 Identify the difference between bacteria, viruses, fungi and parasites Bacteria – are unicellular, prokaryotic micro organisms found almost in all kinds of habits. Some bacteria are helpful like those involved in nitrogen fixation and some pathogenic which cause diseases. Viruses – or tiny organisms which are mostly composed of DNA (Deoxyribo Nucleic Acid) and protein. Viruses attach themselves to other organisms and cause server infectious diseases Fungi – Have chitis in its walls instead of cellulose. Fungi are popular for beneficial effects including foods for protection, penicillin and decomposition. Parasites – Are micro organisms that depends on other organisms for their survival, both…show more content…
1.4 Explain what is meant by systemic infection and localised infection A localised infection is an infection that is limited to a specific body part or region. A systemic infection is the opposite. That's when the pathogen is distributed throughout the whole body. 1.5 Identify poor practices that may lead to the spread of infection Not washing hands after every task, not using the right PPE when required also not covering face when sneezing and coughing. 2.1 Explain the conditions needed for the growth of micro-organisms The physical requirements needed for microorganism growth include temperature and acidity or alkalinity. The chemical requirements include water supply, minerals, oxygen, phosphorous and carbon dioxide. Microbial growth proceeds best when the osmotic pressure is ideal. 2.2 Explain the ways an infection agent might enter the body Mouth, ears, nose contact with skin, cuts any external organs. 2.3 Identify common sources of infection Bad hygiene and

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