Factors that affect how the PH changes during a titration experiment. Concentration of the alkali Having a higher concentration of alkali will mean that there will be more molecules closer together for the acid to collide with. This will speed up the reaction as collision theory suggests that molecules have to collide to react and if there are more molecules to collide with the reaction will happen faster as there is a higher chance of a collision. Volume of alkali An increase in volume would mean
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Self-design Practical: The effect of pH on enzyme activity Rationale Amylase is an enzyme involved in the digestion system which catalyses the breakdown of starch into sugars. It is not only present in human saliva but also in the pancreas‚ where it hydrolyses dietary starch into disaccharides and trisaccharides which are converted by other enzymes to glucose to supply the body with energy. pH has an effect on the activity of all enzymes‚ including amylase. As the pH level increases‚ the enzyme activity
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in neutral pH. To do this the experiment was carried out so that tubes containing a reaction solution of the Amylase enzyme and starch were simultaneously mixed. The reactions were then introduced to I2-KI‚ which stopped the reactions‚ at two minute intervals. Each of these trials was repeated three times to ensure proper accuracy. After concluding the reactions they were placed into a spectrophotometer (A580) for analysis. Graphing the values of the absorbance to time for each pH it was found
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NETW230 Quiz 1-7 Week 1: 1. Question : (TCO 1) With _____‚ snap-in gives a single portal to view and administer nearly all information relating to a server’s production health and functionality status. Student Answer: IIS MMC CMD SMP Instructor Explanation: The answer can be found on page 19. Points Received: 5 of 5 Comments: Question 2. Question : (TCO 1) Each _____ has one or more access control entries (ACEs) that state which objects have permissions to the file
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Enzymes lower the activation energy of chemical reactions but they themselves are not consumed or altered when doing so. These catalysts work best at optimum temperatures and pH’s. The temperature and pH at which the reaction occurs the quickest is the ideal condition for the enzymatic reaction. Alpha amylase converts starch into glucose and when starch is combined with I2KI indicator a dark purple solution forms. As the enzyme breaks down the starch the absorbency will decrease. The absorbency
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Simulation & Performance Evaluation of AODV Protocol with QoS (Quality of Service) Prof. N. A. Dawande Associate Professor Dr. D Y Patil College of Engineering Talegaon‚ Pune‚ India profdawande@yahoo.com Dr. P. M. Patil Principal & Professor RMD Sinhgad College of Engineering WarjeMalwadi‚ Pune-58 pmpatil@gmail.com Abstract: Ad hoc mobile networking is a current active research area. They can be used in agriculture for monitoring and control of environmental parameters in the form
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Abstract: This lab tests how temperature and pH affect how enzymes will function. The lab showed that temperature will denature an enzyme when past its optimal working temperature and won’t denature in cold temperatures‚ but have slowed molecular activity. pH will also have an affect on an enzymes efficiency‚ when out of optimal pH the enzyme will not function as it is supposed to and if to far out of the optimal pH the enzyme will change shape and no longer work. Enzymes also showed to be reusable
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Quantitative Validation of Rating Models for Low Default Portfolios through Benchmarking The new capital adequacy framework (Basel II) is one of the most fiercely debated topics the financial sector has seen in the recent past. Following a consultation process that lasted several years‚ the regulations formally took effect on January 1‚ 2007. The advanced approaches (the advanced internal ratings-based‚ or A-IRB‚ approach and the advanced measurement approach‚ or AMA) are scheduled to become operational
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Emirates Journal for Engineering Research‚ 10 (2)‚ 23-36 (2005) (Regular Paper) VALUE AND RISK MANAGEMENT PROTOCOL FOR DYNAMIC BRIEF DEVELOPMENT IN CONSTRUCTION A.A.E. OTHMAN Department of Social Services and Commercial Buildings‚ Abu Dhabi‚ United Arab Emirates aothman@emirates.net.ae (Received August 2005 and accepted November 2005) اﻟﻨﻈﺮﻳﺎت اﻟﺤﺎﻟﻴﺔ ﻟﻌﻤﻠﻴﺔ اﺳﺘﺨﻼص ﻣﺘﻄﻠﺒﺎت اﻟﻤﺸﺮوع ﺗﺤﺪد ﺗﻄﻮﻳﺮ هﺬﻩ اﻟﻤﺘﻄﻠﺒﺎت اﻟﻲ ﻣﺮﺣﻠﺔ ﻣﻌﻴﻨﺔ. هﺬا اﻟﻤﻨﻈﻮر .ﻳﻌﻮق اﻟﺘﻔﺎﻋﻞ ﺑﻴﻦ اﻟﻤﺎﻟﻚ و اﻟﻤﺼﻤﻢ، آﻤﺎ ﻳﻤﻨﻊ اﻻﺳﺘﻔﺎدة
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Construction and Validation of a Scale to Measure Celebrity Endorsers’ Perceived Expertise‚ Trustworthiness‚ and Attractiveness Author(s): Roobina Ohanian Source: Journal of Advertising‚ Vol. 19‚ No. 3 (1990)‚ pp. 39-52 Published by: M.E. Sharpe‚ Inc. Stable URL: http://www.jstor.org/stable/4188769 Accessed: 22/05/2009 06:55 Your use of the JSTOR archive indicates your acceptance of JSTOR’s Terms and Conditions of Use‚ available at http://www.jstor.org/page/info/about/policies/terms.jsp.
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