the case for and against using a buffer stock scheme to stabilise the price of a commodity such as sugar or tin. A buffer stock scheme is an intervention carried out by the government which aims to limit fluctuations in the price of a commodity. It involves the government and/or local authorities buying these storage stocks and selling them back to the famer. Price stability is indicated by low inflation whereby the value of money is also stable. A buffer stock is an attempt at stabilising
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Experiment 1 : Design and preparation of buffers effective at different pHs Abstract The body uses natural buffers to maintain the many different pH environments in our body. This is important for optimum activity of our enzymes. When doing experiments in vitro using these enzymes it is important to mimic intracellular conditions using artificial buffer systems in order to obtain accurate results. In this experiment the buffering properties of three artificial buffer systems containing acetic acid‚ Gylcine
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Discuss how buffers help to regulate body pH. The pH level in the blood is maintained by the kidneys and the lungs. The pH level on the blood should be at 7.4. In order for the kidneys and lungs to maintain this pH level it affects the buffers in the blood. The buffer is a substance that is resistant to the change in the body’s pH level. Basically the buffers can make an acid or base less potent and try and neutralize it so the body is not overly acidic or basic. When these buffers attach to the
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weighing bottle with a bit of distilled water and add this to the contents of the volumetric flask. Add more water until the flask is almost half full‚ stop and swirl the contents to dissolve the ammonium compounds in the fertiliser. Add more water to make up the volume of the solution to reach calibration line. Mix thoroughly. 3) Using a 20mL pipette‚ dispense aliquots of the fertiliser solution into each of three 250mL conical flasks. 4) Thoroughly wash the pipette and rinse with a small volume of
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EXPERIMENT 2: COMMON-ION EFFECT AND BUFFERS MARVILE REA R. FERRER1 1DEPARTMENT OF MINING‚ METALLURGICAL & MATERIALS ENGINEERING‚ COLLEGE OF ENGINEERING UNIVERSITY OF THE PHILIPPINES‚ DILIMAN‚ QUEZON CITY 1101‚ PHILIPPINES DATE SUBMITTED: DECEMBER 13‚ 2012 DATE PERFORMED: DECEMBER 07‚ 2012 ______________________________________________________________________________________________________________ INTRODUCTION Monitoring the pH range of a laboratory reaction or a process is very
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A. INTRODUCTION Biochemistry is the chemistry of biological systems. The practical component of biochemistry is aimed at developing your interest in and understanding modern biochemical and molecular biological experimentation. The techniques learnt in the biochemistry lab will be applicable to all life sciences. THE OBJECTIVES OF THE BIOCHEMISTRY LABORATORY INCLUDE: (1) Learning the theory behind the techniques and biochemical pathways (2) Learning the physical skills and techniques of
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Lab #5: Refraction of Light Theory: Refraction can be defined as the bending of a wave when it enters a medium which causes it to have some reduced speed. In terms of light‚ refraction occurs when the ray passes through some medium which slows its speed; such as water or glass. In this instance the ray tends to bend towards the normal of the medium. The amount of bending or refraction which occurs can be calculated using Snell’s Law (). Objective: To measure the index of refraction of Lucite
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Carnival Corporation is the worlds largest cruise ship company‚ within approximately 50 of the cruising market. The company had focused on it one specific strategy do one thing and do it better than anyone else and bought a very successful result. Carnival had it particular strengths in the market‚ such as superior experiences‚ excellent services‚ good reputation‚ a variety of diversification‚ etc. The interesting thing is these strengths did make Carnival to be the first of cruising market‚ but
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11 Errors/Limitations in Experimental procedure 11 Significance 12 3.3 Improving the Investigations 12 Suggestions for Improvements 12 Appendix 13 References 13 Journal 14 1 Design 1.1 Defining the problem Research Question This lab will be driven by the research question; do changes in temperature (from 0˚C‚ 7˚C‚ 21˚C‚ 37˚C‚ and 90˚C) have an effect on the activity of the enzyme catalase (found in beef liver) in the breakdown of hydrogen peroxide? Hypothesis If liver is placed
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Unit 1: Biochemistry Review Chemical Bonding Three types of bonds Ionic bond: 2 oppositely charged atoms (Na and Cl) Polar covalent: Unequally shared electrons (H and O) Non polar covalent: Equally shared electrons (C and C) or similar electronegativity Electronegativity and chemical bonding Electronegativity is a measure of the strength in which an atom can attract electrons. A difference of < 0. 5 is non polar covalent bond A difference of 0.5 – 1.7 is polar covalent bond A difference of > 1
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