are a non-protein component of an enzyme and may be organic molecules (called coenzymes) or inorganic ions. 2. (A) NAME FOUR HEAVY METALS THAT ARE TOXIC TO HUMANS. Four heavy metals that are toxic to humans are: 1. Cadmium (Cd) 2. Lead (Pb) 3. Mercury (Hg) 4. Arsenic (As) (B) EXPLAIN IN GENERAL TERMS WHY THESE HEAVY METALS ARE TOXIC TO LIFE. These heavy metals are toxic to life because they generally bind tightly and permanently to the active sites of enzymes‚ thus destroying their catalytic
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Forming habits to prevent obesity “Obesity has reached epidemic proportions globally‚ with at least 2.8 million people dying each year as a result of being overweight or obese” (10 Facts). They have tried to classify obesity as disease for a long time. The American Medical Association recently declared and classified obesity as a disease. Obesity puts you at a high risk for many diseases. Bad habits are the main cause of obesity. You have to improve your nutritional and physical habits to prevent
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I. Title: Reaction of Metals II. Problem: The purpose of the experiment was to determine if and how different metals react to different solutions. III. Hypothesis: IV. Materials: Dropper‚ Beakers‚ wax pencil‚ Goggles‚ eight test tubes‚ a rack for the tubes‚ three strips of Zinc‚ two strips of Copper‚ three strips of Magnesium‚ steel wool‚ Lead nitrate‚ Silver nitrate‚ Copper sulfate‚ Magnesium chloride‚ Zinc chloride‚ Sodium chloride‚ and Potassium. V. Procedure: In tube 1 add five
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The transition metals are placed in the centre of the periodic table‚ between groups 2 and 3. They are generally hard and dense‚ and less reactive than the alkali metals. Iron‚ copper‚ silver and gold are important transition metals. The transition metals: overview The elements in the centre of the periodic table‚ between groups 2 and 3‚ are called the transition metals. Most of the commonly used metals are there‚ including iron‚ copper‚ silver and gold The transition metals Common properties
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Executive Summary 1. We see the company considering the penetration to the new market with a new product. After testing‚ their prototype cushion pads‚ consisting of curled metal‚ performed superiorly to asbestos pads‚ which are currently the industry standard compliment product to pile drivers. 2. Despite the fact that there’s no such a product on the market at the moment. The copmany is likely to face competition from the asbestos pads market (a substitute product) 3. The potential market
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The alkali metals are found in group 1 of the Periodic table. They are very reactive metals and do not occur freely in nature. Alkali metals are malleable‚ ductile‚ and are good conductors of heat and electricity. Alkali metals can also explode if they are exposed to water. The Alkali metals are: lithium‚ sodium‚ potassium‚ rubidium‚ cesium‚ and francium. Lithium The mineral petalite‚ which contains lithium‚ was discovered by a Brazilian scientist named Jose Bonifacio towards the end of the
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Business Forming Advice for John Owner David Tope FIN/571 February‚ 2014 Kent Moser Business Forming Advice John Owner‚ congratulations on your decision to start and business and the beginning of your business plan development! Below you will find my advice on your objectives of: learning what your options are‚ the advantages and disadvantages of each‚ and the possible tax consequences of each. You have six options and they are: sole proprietorship‚ general partnership‚ limited partnership
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WEF_Metals and Mining Scenarios 15.1.2010 17:32 Page 1 Mining & Metals Scenarios to 2030 WORLD ECONOMIC FORUM in collaboration with the INTERNATIONAL FINANCE CORPORATION and MCKINSEY & COMPANY WEF_Metals and Mining Scenarios 15.1.2010 17:32 Page 2 Description Green Trade Alliance Rebased Globalism Resource Security Geo-economic landscape In 2030‚ the world is divided and countries are defined economically by whether or not they belong to the Green Trade Alliance (GTA)‚ formed in
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is made from hardened steel with sharp points at each end. Lines drawn with a scribe are far more accurate than a line drawn with a pencil or pen. A scriber is used to make sharp‚ clearly defined lines on metal. An Engineers Square consists of a metal blade set at 90 degrees to a solid metal block (the stock). Practical uses of an engineer square is a guide for a scriber when marking out lines at right-angles to the edge of the work and a guide to setting up or checking work to see if it’s squared
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ALKALINE EARTH METALS what are alkaline earth metals? Alkaline earth metals are elements that are in the second group of the periodic table. the elements have two electrons on the outermost shell. the elements include Beryllium‚ magnesseum‚ calcium‚strontium‚ barium and Radium.The alkaline earth metals are all silvercolored and soft‚ and have relatively low densities‚ melting points‚ and boiling points. In chemical terms‚ all of the alkaline metals react with the halogens to form the alkaline earth metal halides
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