Biology Planning Exercise June ‘04 The Uptake of Glucose in Yeast Cells Glucose is absorbed across the cell surface membrane (plasma membrane) of most cells. A convenient way to investigate this is to use a solution of glucose and a suspension of yeast cells. The amount of glucose taken up from the glucose solution by yeast cells in a fixed length of time can be measured. At the end of the fixed length of time‚ further uptake of glucose is prevented by transferring the yeast suspension to
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THE MOLECULAR BASIS OF INHERITANCE I. History A. Discovery of “transformation” – a change in genotype and phenotype due to the uptake of external DNA by a cell 1. Griffith 1920s did experiments with Streptococcus pneumoniae (p294 fig16.2) a. took two strains of S. pneumoniae‚ one virulent‚ one not b. heat killed virulent strain‚ then mixed them with the living nonvirulent strain c. living nonvirulent strain became virulent d. nonvirulent strain took on virulent strain’s DNA became virulent
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measured using a styrofoam calorimeter. The three reaction are shown below. Reaction 1: The dissolving of solid sodium hydroxide in water. NaOH(s) ---> Na+(aq) + OH-(aq) + heat Reaction 2: The reaction of solid sodium hydroxide with dilute hydrochloric acid. NaOH(s) + H+(aq) + Cl-(aq) ---> Na+(aq) + Cl-(aq) + H2O Reaction 3: The reaction of sodium hydroxide solution with dilute hydrochloric acid solution. Na+(aq) + OH-(aq) + H+(aq) + Cl-(aq) --->
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I. Time Context September 1993. II. Viewpoint Mr. Ricky Bautista‚ President of Vive Chem Philippines. III. Major Policy Statement VCP is a manufacturing company set up by a group of chemists and chemical engineers involved in developing new products primarily for industrial use. They develop a variety of personal products such as hair care products‚ colognes‚ and deodorants. The company looks to be one of the leaders in facial care industry in the next 10 years. IV. Current Operation Plan Finance:
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This is the 1st ranking of TopBusinessFinance.com’s 50 largest companies in the Philippines in terms of market capitalization. I tabulated the market capitalization of the Philippines’ top companies. Figures are gathered from the Philippine Stock Exchange website (www.pse.com.ph). The Philippine Long Distance Telephone Company (PLDT) ranks as the Philippines’ number 1 most valuable company. Philippines’ Largest Company 2012 The companies are incorporated in the Philippines and are publicly-listed
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arena. I had my first glimpse at molecular biology then. But that brief introduction to molecular biology was enough to compel me to the idea that I want to spend my whole life working and conducting research on it. That passion and zeal brought me to where right now I am. I have successfully completed my masters from the Department of Genetic Engineering and Biotechnology‚ University of Dhaka. I want to note that very few universities offer courses related to molecular biology here in Bangladesh but
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to anyone; it requires a lot of hard work‚” the secret recipe in success is actually persistence. In regard to that‚ stories‚ such as “The Smallest Dragonboy”‚ or articles like “What It Takes to be Great” have specific proved and focused on the fact that success is nothing without persistence and hard work. For example‚ Anne McCaffrey’s nonfiction‚ “The Smallest Dragonboy” tells the tales of an underdog who persevere over his obstacles to ultimately be successful. In addition to that‚ Geoff Colvin’s
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Partners: Sunniva & Bayu Determining the concentration of glucose of 7UP Glucose solutions prepared as follows:- In each case 250.0 cm3 volumetric flasks used Concentration (%) Mass/g 4.00 10.00 8.00 20.00 12.0 30.00 16.0 40.00 20.0 50.00 Table: 1- Recording of concentration‚ volume‚ and qualitative observations of various solute/solvent/solution used during the experiment. Name Concentration (%) Volume (ml) Qualitative Observations Glucose (C6H12O6) 5 different types: 4%‚8%‚12%‚16%‚20% 5.0 ± 0.1
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Title: Reaction of Iodoethane with Sodium Saccharin- Ambient Nucleophile Dates Performed: February 21 + 28‚ 2013 Date Submitted: March 14‚ 2013 Abstract: The product ratio of N-ethylsaccharin to O-ethylsaccharin that occurred due to alkylation with iodoethane at 80 oC was determined to be 81.5% to 18.5%‚ respectively‚ based on an analysis of the 1H NMR spectrum that was collected. The melting point range of 87.8-94.7 oC also indicated that the mixture was largely composed of N-ethylsaccharin
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INTRODUCTION Sodium hypochlorite is considered one of the most efficient irrigant in endodontics 1-4. Due to its antimicrobial‚ tissue dissolving properties and low cost‚ it is one of the most widely accepted irrigant in Endodontic practice 5-8. Sodium hypochlorite as a solution is relatively an unstable compound. On exposure to organic compounds‚ heat‚ light‚ air and metals‚ the available chlorine ions reduce and there is subsequent loss of tissue dissolving and antimicrobial properties 9-10. Recent
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