Effects of Activators and Ethanol on Fermentation Rates In this lab we examined how the rate of fermentation is influenced by the type of substrate‚ and activators and inhibitors. We used four fermentation tubes in which we separately combined yeast with MgSO4‚ pyruvate‚ ethanol‚ and glucose. At five minute intervals we recorded the volume of gas produced in each fermentation tube. Our results are displayed in the graph. Our results supported the prediction that pyruvate is an activator
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INTRODUCTION This paper tackles the effects of the foreign exchange rate as a whole and how it affects the country and at the same time how it gets affected. This paper enumerates the advantages and disadvantages of having a strong Peso. The paper also discusses what factors affect the strengthening and weakening of the Philippine Peso. This paper also includes an in depth analysis of how the foreign exchange could affect and gets affected by the economy‚ the society and politics. OVERVIEW
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Effect of Cohabitation on the Rising Divorce Rate The rise of the divorce rate seems to be due to the lack of commitment or understanding of love and longevity in a marriage. Cohabitation can be defined as an arrangement whereby two people decide to live together on a long term or permanent basis in an emotionally and /or sexually intimate relationship (Brannon 2008). Cohabitation is seen as the best way to understand a prospective mate in terms of living and financial stability
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of 128 mL of 0.650 M Ba(OH)2 was required to completely neutralize 50.0 mL of nitric acid solution (HNO3). What is the concentration of the acid solution? Gravimetric Titration: Calculate the molar concentration of Ba2+ ions in a 500.0 mL sample of an unknown aqueous solution if 2.47 g BaSO4 is formed upon the addition of excess Na2SO4? Stoichiometry of Acid –Base Reactions: What volume of 0.800 M HCl is required to completely neutralize 35.0 g of Ca(OH)2? Solution Problems: 1. Consider
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Ch.5 Yield (total return) = Dollar inc + (end-beg) beg. Value Risk of Return = r= Risk Free rate + Risk Prem r=rRF+DRP+LP+MRP Risk Free Rate = rRF = r* + IP -effects of int rates on PV/Price of securities: int goes up‚ value of bonds goes down‚ stock goes down (NPV) Prices -factors that influence int rates/yield curve 1.production opportunities-return avail w/in an economy from inves. In productive asset; higher prod opp‚ higher return 2. Time preferences for consumption 3
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of the chemical compound that forms limestone. 10) What is the name of the process by which carbonates are broken down by heating? 11) Draw a flow diagram of the limestone cycle‚ including chemical names and formulae. 12) Complete the general reaction: Acid + Carbonate --------> S…… + W…….. + C……… ………… 13) Explain how limestone is used to make cement‚ mortar and concrete. 14) What is the test for CO2 gas? 15) What is the definition of an ore? Why might the economics of extraction change over
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yeast concentration) Hydrogen peroxide volume – 5 cm3 Water Volume -0 cm3 Concentration Volume- 20 vols Time in Seconds Volume of O2 (cm3) Experiment 1 Experiment 2 Average 30 95 94 94.5 60 100 100 100 90 100 100 100 120 100 100 100 150 100 100 100 180 100 100 100 Modifications The results from my preliminary experiment show that 100 cm3 of oxygen has been produced in the first 30 seconds.. This reaction is far too quick and will prevent me from analysing the effects different
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trial produced the most oxygen of all three trials. Heat tends to increase the rate of chemical reactions‚ explained in the article Temperature Effects (Introduction to Enzymes) by Chris Jamison. “Like most chemical reactions‚ the rate of an enzyme-catalyzed reaction increases as the temperature is raised. A ten degree rise in temperature will increase the activity of most enzymes by 50 to 100% . Variations in reaction temperature as small as 1 or 2 degrees
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Plan a procedure that will allow you to compare quantitavely the glucose concentration in fresh samples of orange‚ lemon and grapefruit juice. Aim: The aim of this investigation is to produce a set of data which will enable comparison of the glucose concentrations of orange‚ lemon and grapefruit juice. Research: Benedict’s Reagent is a mixture of sodium compounds and copper sulphate. The copper ions are reduced by fructose (a reducing sugar) to form copper oxide‚ thus turning it from blue
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are amylases? Amylases are enzymes that break down starch or glycogen. Amylases are produced by a variety of living organisms‚ ranging from bacteria to plants and humans. Bacteria and fungi secrete amylases to the outside of their cells to carry out extracellular digestion. When they have broken down the insoluble starch‚ the soluble end products such as (glucose or maltose) are absorbed into their cells. Amylases are classified based on how they break down starch molecules i. α-amylase (alpha-amylase)
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