The Effect of pH on a Food Preservative September 18‚ 2012 Objective: To study the affect of pH on a food preservative. Chemical Equation: C6H5COONa + HCL ------ C6H5COOH + NaCl Procedure: This experiment was started with a clear solution of sodium benzoate and HCl was added to it‚ ultimately producing benzoic acid. First‚ .3395 g of sodium benzoate was weighed‚ then it was dissolved in water‚ causing it to disassociate into ions. Next‚ 3M of HCl were added drop wise to the solution
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Marissa Ware Partner(s): None Chem 253—TA: Josh Lovell Lab 1: Effect of pH on a Food Preservative 6/11/13 Purpose: (1 point) To determine whether a chemical change occurs when Sodium Benzoate is acidified to Benzoic Acid. Theory: (2 points) Sodium Benzoate is a common food preservative found in jellies‚ jams‚ sodas‚ fruit juices‚ etc... Its acid‚ Benzoic Acid‚ is an organic preservative that stops the growth of bacteria‚ yeasts‚ and molds. Reaction: (3 points) Reaction: sodium
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Topic 2 – Cell membranes Reading Chapter 5 Objectives Functions of cell membranes The fluid mosaic model The lipid bilayer – phospholipids‚ glycolipids and sterols Properties of the lipid bilayer Membrane proteins – the ‘mosaic’ in the model Solute movements across membranes BIO 1140 – SLIDE 1 http://www.nikonsmallworld.com/gallery/year/2006/id/751 Functions of cell membranes – an overview Fluid mosaic model Singer & Nicolson 1972 Fluid lipid molecules in which
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The Cell Cycle Brittany Jameson Vista College Abstract The cell cycle is made up of five steps. These steps are interphase‚ mitosis‚ cytoplasmic division‚ cell differentiation‚ and cell death. During mitosis there is a series of four stages. The Cell Cycle To start the cell cycle the cells first go through a step called interphase. During this step the cell grows and synthesizes new molecules and organelles. In the S phase the DNA of the cell is replicated in preparation for cell division
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portion of their college general requirements. The course will cover basic concepts in the Life Sciences which include biochemistry and molecular biology‚ cell biology‚ histology‚ and anatomy and physiology. Various relevant issues and advances on biomedical sciences (natural history of diseases‚ recombinant DNA technology and genetic engineering‚ stem cell technology‚ etc.) will also be discussed in this course. COURSE GOALS 1. Integrate the Benedictine values and ideals of work‚ study‚ prayer‚ stability
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Considering my audience‚ arranging the sequence of my papers‚ and generating a productive thesis are a few of the many things that I have taken from English 111 and used to accomplish my goals in other classes this semester. Prior to taking English 111‚ I would literally throw any assignment together in the blink of an eye. The format and the structure of my papers did not even cross my mind. I have spent years trying to figure out the root cause in regards to why I always receive poor grades on my papers
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to chromosome theory of heredity because they both deal with the genetic material coming from the mother and father of the organism. 10. Beadle and Tatum’s work opened up a whole new way of looking at genes and what they do as well as their functions and structural formation. Also their work helped to observe crossing between two sexes forming variability of offspring for genetic combinations and trait outcome. 11. The biochemical nature of a gene mutation is to add traits into a gene to
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Success in English 111 “Success is a journey‚ not a destination. The doing is often more important than the outcome” I believe that a student will be successful in English 111 by arriving to class on time‚ by completing the mywritinglab assignments that are on blackboard‚ and reaching out for tutoring if needed. If a student arrives to class on time everyday they will not run the risk of being dropped from the course. However if a student does arrive late‚ or leaves early‚ the amount of class time
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identify the right pay programs to recognize and reward desired behaviors. Second‚ it must decide how to organize work procedures to make the best use of available resources. Basic wages/Salaries:- These refers to the cash component of the wage structure based on which other elements of compensation may be structured. It is normally a fixed amount which is subject to changes based on annual increments or subject to periodical pay hikes. It is structured based on the position of an individual in the
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PLANT CELL AND ANIMAL CELL LECTURER : ENCIK AZHAR GROUP’S NAME : 2. Mohd Alimi 3. Suraya Hani 4. Norhaswana CONTENT INTRODUCTION 3 WHAT IS CELL? 4-5 HISTORY OF CELLS DISCOVERY 6 ANIMAL CELL 7 PLANT CELL
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