The Rise of the Superbugs A Superbug is a bacterium that can live in the human body and has the ability to withstand all forms of antibiotic medication. Superbugs are becoming increasingly significant in modern medicine as they are becoming more and more resistant to antibiotics. Antibiotics were discovered in 1928 by Alexander Fleming (Walsh and McManus‚ 2000). This resulted in a huge movement forward in medical history and even greatened human life expectancy. Since then antibiotics have been
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GCSE Biology This blog will cover and explain the specification for Edexcel triple science course 2013 for biology. Hope it helps :) Monday‚ 20 May 2013 3.33 understand that the incidence of mutations can be increased by exposure to ionising radiation (for example gamma rays‚ X-rays and ultraviolet rays) and some chemical mutagens (for example chemicals in tobacco). There are things that make you more likely to have a mutated gene‚ these include: ionising radiation and chemical mutagens like
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aerobic respiration in plants and animals e.g. germinating seeds and mealworms Bio Experiment : Comparing Rate of respiration in mealworms at different temperatures? Mealworms are cold-blooded animals and are unable to maintain a constant core temperature‚ hence respiration would therefore change with temperature. As glucose is oxidised‚ oxygen is used up and carbon dioxide and heat energy is produced. Increment in temperature / production of CO2 or O2 consumption would hence be good indicators
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M10/4/BIOLO/SPM/ENG/TZ2/XX+ 22106016 Biology Standard level Paper 1 Monday 17 May 2010 (afternoon) 45 minutes INSTRUCTIONS TO CANDIDATES • Do not open this examination paper until instructed to do so. • Answer all the questions. • For each question‚ choose the answer you consider to be the best and indicate your choice on the answer sheet provided. 2210-6016 15 pages © International Baccalaureate Organization 2010 –2– M10/4/BIOLO/SPM/ENG/TZ2/XX+ 1. What does a small standard deviation
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Prac 4 | Vertebrate Forelimbs‚ Shake a Leg! Ch. 6.4 H.Bio T.Book Aim: To gather information from secondary sources to observe‚ analyze and compare the structure of a range of vertebrate forelimbs. Materials: Pearson Biology Textbook coloured pencils Skeletons‚ photographs of a number of vertebrates copy of student worksheet Method: 1 Examine each of the vertebrate specimens in turn. Using Figure 1 as a guide‚ locate and identify the bones making up the pentadactyl limb structure
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Biology coursework The aim of this experiment is to investigate the affect of pH on the enzyme amylase. The amylase is used to break down the polysaccharide starch. Amylase is a digestive enzyme classified as a saccharidase (an enzyme that cleaves polysaccharides). It is mainly a constituent of pancreatic juice and saliva‚ needed for the breakdown of long-chain carbohydrates (such as starch) into smaller units. Amylase is also synthesized in the fruit of many plants during ripening‚ causing them
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Bibliography: Johnson‚ J. J. (n.d.). Lab Report . Retrieved 3 1‚ 2014‚ from IB Biology Higher Level: http://www.edu.pe.ca/gray/class_pages/smaccormack/leaf_disc_photosynthesis_write_up.pdf Photosynthesis. (n.d.). Retrieved 3 1‚ 2014‚ from IB Guide: http://ibguides.com/biology/notes/photosynthesis-hl
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Biology coursework: Substrate specificity in yeast AIM: To find out which substrate (glucose‚ starch‚ maltose‚ sucrose or lactose)‚ does yeast‚ the organism containing the enzyme‚ breaks down the quickest. Introduction: Usually‚ every enzyme has a specific substrate that is what we call the “lock and key” theory. We can try the reaction of an enzyme with different substrates and this enzyme will just work well with one of those substrates. One type of reaction catalyzed by enzymes is anaerobic respiration
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Biology Notes Genetics Trait - distinguishing characters or phenotypic features of an individual. (e.g. Blue eyes‚ black hair‚ etc.) Purebreed - having descended from ancestors of a distinct type or breed. Purebreed organisms in a given species or variety all share similar traits. (e.g. Purebred dog.) P Generation - Designation given to the parent generation. F1 and F2 generation - First and second filial generation. First Filial Generation - offspring from the cross of the P generation.
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1/ What is the driving force in the diffusion? Randomness. As far as forces go i believe you can end up with a pressure if you have two different concentration on opposite sides of a membrane. Cells have been know to explode as a result of this effect. Wikipedia.org‚ "The World’s Encyclopedia" really says it best Search ’Molecular diffusion" "Molecular diffusion‚ often called simply diffusion‚ is a net transport of molecules from a region of higher concentration to one of lower concentration by
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