negative on blue. A buffer is added to acidic or base substances to get them to a certain pH state and prevent change from happening. This is important in agriculture‚ food processing‚ and medicine. Our body uses buffers to make sure our blood has a pH of 7. We also use buffers in reactions involving enzymes. Conclusion- After finishing this lab the data and results contained the pH of all the substances we tested and their effect on litmus paper. We also tested buffers and how
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An Investigation Into The Effect Of PH On The Activity Of Potato Tissue Catalase Aim The aim of my investigation is to see how pH affects the activity of potato tissue catalase‚ during the decomposition of hydrogen peroxide to produce water and oxygen. Catalase + 2H2O2 Catalase + 2H2O +O2 Catalase + Hydrogen Peroxide Catalase + Water + Oxygen Independent Variable The independent variable in this investigation is pH. Each individual enzyme has it’s own pH characteristic
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6 – 150 mL beakers were set up and a stir bar placed in each beaker. Each beaker was labeled with DI water‚ or the pH buffer that was going to be put in the beaker. 50 mL of each of the 5 assigned pH buffers and DI water were obtained using a graduated cylinder and placed in the corresponding beaker. Each of the beakers containing the pH buffer and DI water were placed on the stir plate and the stir plate turned on. A sample of salicylic acid was obtained in a weigh boat and taken back to the lab
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Chemical and Physical Processes of Digestion exercise T 8 he digestive system is a physiological marvel‚ composed of finely orchestrated chemical and physical activities. The food we ingest must be broken down to its molecular form for us to get the nutrients we need‚ and digestion involves a complex sequence of mechanical and chemical processes designed to achieve this goal as efficiently as possible. As food passes through the gastrointestinal tract‚ it is progressively broken down
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This article was downloaded by: [146.83.123.2] On: 15 May 2014‚ At: 14:05 Publisher: Institute for Operations Research and the Management Sciences (INFORMS) INFORMS is located in Maryland‚ USA Interfaces Publication details‚ including instructions for authors and subscription information: http://pubsonline.informs.org Improving Car Body Production at PSA Peugeot Citroën Alain Patchong‚ Thierry Lemoine‚ Gilles Kern‚ To cite this article: Alain Patchong‚ Thierry Lemoine‚ Gilles Kern
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DISCUSSION In this experiment‚ we will extract plasmid DNA that carrying pKan and pAmp from E. coli that have been cultured overnight in LB media containing antibiotic kanamycin and ampicillin respectively. So‚ the DNA that will be introduced later will make the bacteria resistance to antibiotic kanamycin or ampicillin. A plasmid is a small‚ circular‚ double stranded DNA molecules and cloning vector that are widely used for recombinant DNA technology. It can be physically separated from chromosomal
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18th May 2011 Table of Contents Need for Inventory Underlying Principles Current Philosophies of Inventory Mgmt Pros and Cons of IM Principles TOC and MEIO Primary Needs of an Effective IM System MapMySupplyChain 5/27/2011 Strictly Private & Confidential 2 Need for Inventory Inventory Need Principles Philosophies Pros and Cons TOC and MEIO Effective IM System MapMySupply Chsin To tide against Supply Chain Uncertainities – Transporter uncertainity‚ Supplier Lead Time
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solution was inserted into the spectrophotometer and measured with the 420 nm wavelength. This procedure was repeated for the remaining test tubes. Exercise B required 4 test tubes labeled with “A‚B‚C‚ or D” and they held the solution of different pH buffer and potato juice volumes‚ and 1 mL of water (Table 4). These tubes were the blanks for the spectrophotometer for recalibrating it. The additional 4 experimental test tubes were composed of the same contents but 1 mL of the substrate catechol was added
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of SDS-PAGE is to separate proteins under denaturing conditions according to their number of subunits and size of those subunits. 2. Materials And Methods : 3.5 As the manual. 3.6 Take 5 grams of cauliflower + 25 ml of buffer extraction buffer ( PH Tris or NaCl) ‚ but all other materials as the manual . 3.7 As the manual. 3.8 Procedure: 1. Find the small fractions that you froze at the end of the cell fractionation experiment. 2. Now‚ determine what
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Chapter 3: Process flow measures 3.1 Objective The objective of this chapter is to identify key operational measures that may be used to study process flows. They are linked together using Little’s law. We then present a series of examples that show how process flow analysis may be used to study performance. The objective is to study current performance as well as identify target areas for improvement. We also link the operational measures of performance to financial measures. In a class of
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