Cambridge international as and a level biology builds on the skills acquired at cambridge igcse or equivalent level. Infectious diseases diseases caused by pathogens some disease affect us for short periods of time common cold measles, influenza others are more chronic tb, aids infectious diseases are not like copd or coronary heart diseases which are degenerative and are not caused by pathogens. Revision notes for aqa biology unit 1 slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The water becomes contaminated when a person with the disease which causes severe diarrhoea produces the faeces which then carry the bacteria in the. Cholera is a wide spread, bacteria caused, disease which is spread by unclean water.
As students, we have always enjoyed learning biology and want to make it a fascinating subject for others as well. The disease is not endemic to the uk and is rarely imported from abroad an average of only 10 cases of cholera are imported into the uk annually. Jun 07, 2014 revision notes for aqa biology unit 1 slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Aqa biology unit 1 revision notes linkedin slideshare. A vaccination is the introduction of a pathogen usually weakenedattenuated into the body with the intention of stimulating active immunity against that pathogen. Bacteria are ingested by consuming contaminated water and food. As level biology 1011 infectious diseases and immunity 1. The infected person will show symptoms of the disease while the body produces enough of the right antibody to overcome the infection. A level biology resources aqa, ocr, edexcel and wjec. The pdf files for separate chapters are also available. Cholera is an acute secretory diarrheal illness caused by. Cholera how it affects humans, symptoms and treatments. As cholera is a waterborne disease, it occurs where people do not have access to proper sanitation, a clean water supply.
It provides full coverage of the syllabus for examinations from 2016 onwards. As and a level information technology 9626 igcse history 0470. Measles is a highly contagiousinfectious disease mainly caused by the measles virus. Igcse biology past year papers 0610 download twins. Quarantine yellow fever, cholera, small pox, plague, sars e.
Oct 16, 2011 cholera powerpoint for aqa biology and disease. Cholera, malaria, aids, tb, measles eradication of smallpox basic terms used in the study of infectious disease antibiotics. Cholera aqa biology new specification revision notes. Cholera is a disease spread by the bacterium vibrio cholerae. Cholera is an infectious disease caused by vibrio cholerae, which is a major cause of death in areas of the world where a proper infrastructure for good sanitation doesnt exist. Unfortunately, if you are looking for dedicated resources for the new aqa biology course, you will have to look elsewhere, as i do not teach that specification. Wmpjan11biol1 02 do not write outside the box 2 1 the diagram shows a cholera bacterium. The primary response is slow because there arent many bcells that can make the antibody needed to bind to it.
Feb 24, 2014 a level presents cholera, a video lecture specific to aqa biol1 module for a level biology. Feb 25, 20 introduction this new edition is fully updated for the 2014 syllabus to help you do well in your cambridge international examinations as and a level biology 9700 courses. A level biology help lastminute a level biology revision. Gce biology specification 2010 lytham st annes high. It spreads through the air by respiratory droplets from infected person. Some of these diseases, such as cholera and tuberculosis may be caused by. To fully appreciate its biology, one must take into account data collected from many different scientific disciplines. Using pdf notes, you can easily add text notes, highlight an important things by choosing a pen or draw geometric figures in pdf docs. Calculate the actual width of the cholera bacterium between points b and c.
Yes, a cholera bacterium would have a peptidoglycan cell wall. Cambridge international as and a level biology 9700. A level biology does pretty much what it says on the tin. Introduction this new edition is fully updated for the 2014 syllabus to help you do well in your cambridge international examinations as and a level biology 9700 courses. Cholera aqa biology new specification revision notes in a. Over 22,000 learners have used our materials to pass their exams.
We provide detailed revision materials for a level biology students and teachers. Cholera cholera is a widespread acute intestinal infection often found in developing countries where water systems are contaminated with untreated sewage effluent containing the pathogenic bacteriumvibrio cholerae. Old aqa alevel revision scroll down for lots of materials to help you prepare for your exams. Originally designed for an undergraduate upperdivision biology course focusing on the epidemiology of diseases, the simulation is also. The chapters are arranged in the same sequence as the material in your syllabus. The 21 fundamental sections for these 0610 igcse biology past year papers. Alevel biologycells wikibooks, open books for an open. Outlines how we have tried and why we have failed to prevent transmission. Designed to meet the requirements of the qca as and a level subject criteria, this new specification continues the best features of the two current aqa specifications, biology a and biology b.
Finally, to end the as level syllabus learn about the diseases that pose threats not. For a person to be infected by cholera, the bacterias genetic material must be present in the intestine. Interactive guide to cholera for a level biology students by medecins sans frontieres uk. Knec kcse biology syllabus 2020 syllabus high school. Here is a pdf file with all biology notes for igcse 2014 for you to download. The original chromosome and copy become attached to the cells plasma membrane for a while. Msomi maktaba notes za o level na a level all subjects physics chemistry biology mathematics literature civics general study geography angiculture history kiswahili commerce book keeping accounting computer economics form one form two form. If youre ready to pass your alevel biology exams, become a member now to get complete access to our entire library of. As for what you need to know about it, i know for unit 2 you only need basic knowledge of prokaryotic ultrastructure 70s ribosomes, circular dna, etc. Clinical features, diagnosis, treatment, and prevention. Here is a pdf file with a2 level biology notes 20162018 cambridge international for you to download. Chapters 1 to p1 cover the as material, and chapters 12 to p2 cover the extra material you need for the full a level examinations.
Unfortunately, if you are looking for dedicated resources for the new aqa biology course, you will have to look elsewhere, as i. Alevel biology help lastminute alevel biology revision. Hello, this is the summary of igcse biology cambridge for 2014 exam. This is a powerpoint i made to cover the cholera lesson for aqa unit 1 biology and disease. As cholera is a waterborne disease, it occurs where people do not have access to proper sanitation, a clean water supply or uncontaminated food. Viruses, fungi, bacteria and protists notes biology. Interactive guide to cholera for a level biology students. Cholera i usually spread by contaminated food andor water the cholera pathogen is a bacterium called vibrio cholerae. Vibrio cholerae, the bacterium that causes cholera, is usually found in food or water contaminated by feces from a person with the infection. If you are teaching any a level now, much of your teaching material will still be relevant. Cholera is contracted when people eat food or drink water that has been contaminated with matter excreted waste containing vibrio cholerae cholera is treated by ors oral rehydration solution which is a mixture containing the correct concentration of water to rehydrate the tissues, sodium to replace the sodium ions lost from the epithelium of the. In science organic compounds contain carboncarbon bonds, while inorganic compounds dont. As biology unit 1 page 4 hgs biology alevel notes ncm711 biological molecules living things are made up of thousands and thousands of different chemicals. It is for this reason that people poorer countries have a higher incidence of contracting the disease poorer living conditions, hygiene and lack of clean water all contribute.
Click to rate hated it click to rate didnt like it. Jun 03, 2016 as level biology 1011 infectious diseases and immunity 1. This is an electron micrograph of vibrio cholerae made by a sem. These chemicals are called organic because they contain the element carbon. Explains the nature and biological impact of the bacterium vibrio cholerae. Old aqa a level revision scroll down for lots of materials to help you prepare for your exams.
Click on the popout button on the upper right corner of the pdf file to have full view and to download. Alevel biologyhuman health and diseaseinfectious diseases. Home as unit 1 as unit 2 prokaryotic and eukaryotic cells. It is for this reason that people poorer countries have a higher incidence of contracting the disease poorer living conditions, hygiene and. The resources on this page are for the aqa biology course running up until 2015. Cholera is contracted when people eat food or drink water that has been contaminated with matter excreted waste containing vibrio cholerae cholera is treated by ors oral rehydration solution which is a mixture containing the correct concentration of water to rehydrate the tissues, sodium to replace the sodium ions lost from the epithelium of the intestine, glucose to stimulate. This lowers the water potential of the gut, and means that water moves in down the concentration gradient. Combined science o level notes garikai dzoma 20180708t06. Give your answer in micrometres and show your working. As level biology 1011 infectious diseases and immunity. Vibrio cholerae is unusual in that it competes in the natural environmental community of bacteria in estuarine and brackish waters worldwide. Covers infectious diseases section in the as cie syllabus covers 5 infectious diseases. Alevel biology question paper unit 01 biology and disease.
Cholera is a disease caused by a bacterium and is commonly found in contaminated water. It is spread by being ingested with food or, more commonly, water contaminated by matter which itself contains the bacterium. Cholera is an infectious disease caused by vibrio cholerae, which is a major cause of death in areas of the world where a proper infrastructure for good. A level presents cholera, a video lecture specific to aqa biol1 module for a level biology. Cholera is an intestinal disease and therefore not reached by the immune system. Generally, an ebook can be downloaded in five minutes or less. The syllabus includes the main theoretical concepts which are fundamental to the subject, a section on some current applications of biology, and a strong emphasis on advanced practical skills. Click the button on the right to download adobe reader. Since 1961, there have been seven major cholera pandemics the global spread of cholera during the seventh pandemic, 19611971, affectingmillions of people living in south america, africa, europe, and asia.
New gce biology specification for first teaching 2008. Infectious diseases diseases caused by pathogens some disease affect us for short periods of time common cold measles, influenza others are more chronic tb, aids infectious diseases are not like copd or coronary heart diseases which are degenerative and. See more ideas about biology, medicine student and medicine notes. The bacteria pass through the stomach if the contents are sufficiently acidic less than ph4. Form 4 agriculture notes agriculture notes form 3 agriculture notes f1 form 2 agriculture notes pdf agriculture notes form 1 download agriculture notes form 14 pdf agriculture notes form 2 general agriculture notes pdf form i 1. If you continue browsing the site, you agree to the use of cookies on this website. Instant access to hundreds of a level biology teaching resources 385 bio factsheets, powerpoints, questions by topic for aqa, edexcel, ocr and wjec biology as and a levels. May 11, 2015 cholera is prevalent in areas with poor sanitation and poor food and water hygiene and constitutes a major global public health problem. Is a scientific study which deals with living things or organisms.
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