Summary of Carbohydrates: Monosaccharides‚ Disaccharides‚ Polysaccharides Carbohydrates are molecules that are synthesized from carbon‚ oxygen‚ and hydrogen atoms. Some types of carbohydrates consist of a single unit consisting of a few atoms‚ while other carbohydrates consists of thousands of units linked together through chemical bonds. Glucose‚ maltose‚ and glycogen are three carbohydrates that are similar‚ but structurally different. Carbohydrates have the general molecular formula CH2O. Starch
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processes such as protein synthesis and photosynthesis. Photosynthesis is a process where by plants uses light energy to convert carbon dioxide present in the air into chemical energy‚ or food such as carbohydrates. 6CO2 + 12H2O + 672K energy -> C6H12O6 + 6H2O + 6O2 Lacking of this nutrient would cause retardation in growth‚ and the plant may wilt overtime. However‚ it would only occur if chemical fertilizers and nutrients from the soil are absent and depleted. With the aid of chemical fertilizers
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EXPERIMENT – 9 To Prove that Light is Necessary for Photosynthesis. Aim : To show experimentally that light is necessary for photosynthesis. Requirements : A potted plant‚ iodine solution‚ black paper strip‚ paper clips‚ water bath. EXPERIMENT PLEASE VIEW THE ANIMATION FILE FOR THE PROCEDURE Observation : 1) The region of the leaf which was exposed to sunlight turns blue in colour. 2) The region of the leaf covered with black strip turns brownish in colour
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Louis Pasteur And The Alcoholic Fermentation Abstract: Louis Pasteur (1822-1895) was a French chemist and microbiologist known for his discoveries in the field of vaccination‚ pasteurization and microbial fermentation. His discoveries have saved many lives and his contributions to science‚ technology‚ and medicine are nearly without precedent. This paper will focus on one of the aspect of his work that relates mostly to chemistry: the alcoholic fermentation. Louis Pasteur:
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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 Tuesday 6 November 2007 – Morning Time: 2 hours Question Leave Number Blank 1 2 3 4 5 Materials required for examination Nil Items included with question papers Nil 6 7 8 9 Instructions to Candidates In the boxes above‚ write your centre number‚ candidate number‚ your surname
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How Energy is used in the Body (M1) We get chemical energy from food we eat and oxygen that we breathe –we need this to get energy into a usable form to be used by the cells Glucose + Oxygen ----------------> Carbon Dioxide + Water (C6H12O6) (O2) Metabolism (CO2) (H2O) (1C6H12O6) (6O2) In Cells (6CO2) (6H20) Metabolism is the process of getting chemical energy from larger molecules in food and breaking them down into smaller
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to carbon dioxide and ethanol using an enzyme. Ethanol is oxidised‚ by bacteria‚ producing malt vinegar. (a) Use the above information to complete the flow chart. 2PS (b) The equation for one of the processes is: C6H12O6 ® C2H50H + CO2 Balance this equation.1PS National 5 1. Sweets‚ such as pineapple cubes‚ contain the artificial flavouring methyl butanoate. a) To what family of compounds does methyl butanoate belong to? 1KU Methyl butanoate
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Michelle Gordon‚ TJ (Group 4) Section 33 Yeast Cell Respiration 10/04/2010 Part B: Explanation of Results All cells carry out the process of cell respiration in order to meet their energy needs. It is advantageous for cells to have the ability to metabolize different substrates. In this experiment‚ we investigated each sugar’s (glucose‚ lactose‚ sucrose‚ fructose‚ and lactose/lactaid) cell respiration rate. When referring to my group’s graph and data‚ glucose ended up with the highest
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production of ATP? Nathaniel Redwine 9-24-14 590550535305001st Introduction The process of photosynthesis occurs when six carbon dioxide molecules (CO2)‚ six water molecules (H2O)‚ and light energy are added together and result in glucose (C6H12O6) and six oxygen (O2) molecules. There are two stages to this process; light reactions and dark reactions. Light reactions start with chloroplast which absorbs the light. Inside the chloroplast are thylakoids that contain pigments which absorb certain
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Exothermic and endothermic reaction happened everywhere around us. Basically exothermic and endothermic reaction is transfer energy to the surroundings and take in energy from the surroundings (BBC GCSE bitesize). If the reaction forward ，then is exothermic.If the reaction is the backwards ‚then is endothermic. When a reaction take place‚ the energy started to transfer from different object to the surroundings or take away energy from the surroundings. When temperature started to change. Exothermic
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