polystyrene. Eduard Simon isolated the substance from natural resin‚ however‚ he did not know what he had discovered. In 1922‚ Hermann Staudinger published his theories on polymers‚ stating that natural rubbers were made up of long repetitive chains of monomers that gave rubber its elasticity. He went on to write that the materials
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Effector functions of antibodies Antibodies also known as immunoglobulins are secreted by plasma cells and B lymphocytes from the bone marrow and the lymphoid organs. The effector functions of antibodies are determined by the constant regions of the heavy chain. There are five different isotypes known in mammals to perform different roles and to direct a specific immune response for the antigen encountered. The binding of antigens to the variable regions will trigger the effector functions. Antibodies
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Skeletal‚ Muscular‚ and Integumentary System The Muscular System Our muscular system provides the main source of force to put our bodies into motion. More than 40% of our body mass is composed of muscle. Types of Muscular Tissue There are three types of muscle tissue: 1. Skeletal Voluntary movement‚ attached to bones. 2. Smooth Involuntary movement‚ found in digestive tract‚ circulatory system‚ etc. 3. Cardiac Involuntary movement‚ found only in heart. Muscle Contraction Skeletal Muscle
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AP Biology 6th Mr.Scofield Blast Lab Background: Between 1990–2003‚ scientists working on an international research project known as the Human Genome Project were able to identify and map the 20‚000–25‚000 genes that define a human being. The project also successfully mapped the genomes of other species‚ including the fruit fly‚ mouse‚ and Escherichia coli. The location and complete sequence of the genes in each of these species are available for anyone in the world
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statement. | | Prohibiting the use of polystyrene foam (Styrofoam/stryrofor) | | * Commercial establishments as stated above player * Costumers | * Banning the use of poly-ethylene product - a petroleum-based plastic made from styrene monomer and a light weight material used in all types of products from cups and food packaging materials in some specific establishments. * Providing some tax remedies to the non-violating establishments. * Penalizing the establishment who violated the
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INTRODUCTION These polymers composed of amino acid monomers called proteins are important to our body. Protein is important because it composes parts of our body and assists in bodily functions. A type of protein named keratin makes up our hair and nails. Protein is used in your body to repair and build tissue‚ and it is a necessity in making hormones‚ enzymes‚ and other chemicals in the body. Many people use protein substances and supplements in correlation with weight lifting and working out to
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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education *6145201818* CHEMISTRY Paper 3 (Extended) Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number‚ candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a pencil for any diagrams‚ graphs or rough working. Do not use staples‚ paper clips‚ highlighters‚ glue or correction
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Bibliography: M. Boyle‚ K. Senior. (2008)Human Biology 3rd Generation. London. A. Waugh‚ A. Grant. (2001) Anatomy and Physiology in Health and Illness. http://www.biology-online.org/dictionary/Monomer http://www.ehow.com/about_4843877_digestive-organs-within-cardiovascular-system.html http://www.purchon.com/biology/enzymes.htm
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DESIGN OF THE QUESTION PAPER CHEMISTRY CLASS - XII Time : Three Hours Max. Marks : 70 The weightage of the distribution of marks over different dimensions of the question paper shall be as follows: A. Weightage to content/subject units Unit Title Marks 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. Solid state Solutions Electrochemistry Chemical Kinetics Surface Chemistry General principles and process of Isolation of elements p-Block Elements
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Surname Centre No. Initial(s) Paper Reference 4 3 3 5 Candidate No. 2 H Signature Paper Reference(s) 4335/2H Examiner’s use only London Examinations IGCSE Team Leader’s use only Chemistry Paper 2H Higher Tier Wednesday 17 June 2009 – Morning Time: 2 hours Materials required for examination Nil Items included with question papers Nil Question Leave Number Blank 1 2 3 4 5 6 7 8 9 Instructions to Candidates In the boxes above‚ write your centre number‚ candidate number‚ your surname
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