How do Food Preservatives affect the growth of Microorganism? | By: Aya Zbedah | | December 15‚ 2008 | | Mrs. Hafell 5th Period Biology | 2008-2009 | | Abstract How Food Preservatives affect the growth of Microorganisms? Aya Zbedah Ballard High School The purpose of this project is to see which preservative will either slow down the growth of bacteria or speed up the growth using the three most common preservatives: sugar‚ salt and‚ vinegar. Humans usually have a problem keeping their
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Name ____Tamara Diaz Velasquez__________ Date_____12/24/2012_______ Period_____7th________ Study Guide for Green Lab Book Exam This study guide does not cover all of the material on your test. This review is meant to be a starting point to help you remember the major ideas that we covered in class. Be sure to also review the information in your notebook‚ lab book‚ and returned quizzes and tests. 1. What is ecology? The scientific study of how living things interact with each
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12U Equilibrium Unit Test Multiple Choice K/U Identify the letter of the choice that best completes the statement or answers the question. ____ 1. When solid lead(II) phosphate is in equilibrium with its ions‚ the ratio of lead(II) ions to phosphate ions is which of the following? a. 1:1 d. 2:3 b. 1:2 e. 3:2 c. 2:1 ____ 2. In a saturated solution of silver phosphate‚ the concentration of silver ion is 4.5 10-4 mol/L. The Ksp of silver phosphate would be which of the following
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Unit 2 – Disposition of Toxicants Ch 5 – Absorption‚ Distribution‚ and Excretion of Toxicants Ch 7 - Toxicokinetics Chapter 5 Absorptions‚ Distribution‚ and Excretion of Toxicants © The McGraw-Hill Companies‚ Inc‚ 2011 Factors Affecting Disposition • If fraction absorbed or rate absorbed is low‚ may never reach high enough concentration to cause toxicity • Concentrated in a tissue other than the target organ‚ thus decreasing toxicity • Biotransformation may result in formation of less toxic
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Development of an Equation Maggie Purpose: Investigate a chemical reaction using lab procedures and observations. Then‚ find a pattern of reactivity and explain the findings using a chemical equation and particle diagram. Procedure: Refer to: Department of Chemistry‚ The Ohio State University. "Development of an Equation." General Chemistry 1210 Laboratory Manual. Vol. 2013-2014. Plymouth: Hayden-McNeil. 32-35. Data/Results: Part A: In the potassium iodide solution‚ I think there were potassium
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ACKNOWLEDGEMENT I Ashish Katoch student of B.Tech‚ C.T. Institute of Management‚ Shahpur‚ Jalandhar‚ feel immense pleasure in presenting the seminar on the topic ‘Drug Addition’. I have put in all my efforts to make this seminar complete in all respect. I have done my level best and have tried with my sincere efforts to do full justice with the topic‚ but there would be quite injustice on my part if I fail to mention the most creditable person whose involvement has made possible to make this Project
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Is Organic Food Worth Its Price? Organic farming began in the late 1940’s in the United States‚ and in recent years it has seen a dramatic increase in popularity (Rubin 1). The sales of organic food have been increasing by about 20 percent a year over the past decade (Marcus 1). That is over ten times the rate of their conventional counterparts (Harris 1). There are 10 million consumers of organic food in the United States‚ yet organic food represents only one percent of the nation’s food
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REAGENTS: R1: - 0.9% sodium chloride solution. R2:- Diazo reagent Diazo reagent: - 7ml of sulphanilic acid + 1ml of sodium nitrite PROCEDURE The test tubes were labelled blank‚ sample and standard. 250µl of R2 and 2ml of R1 was pipetted into the test tubes labelled sample and standard while only the R1 and 200µl of sample was pipetted into the test tube labelled blank. 200µl
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Analysis of Silver in an Alloy Introduction In this experiment an alloy of silver will be analyzed to determine its silver content. The silver-copper alloy will be dissolved in nitric acid‚ the silver will be precipitated as silver chloride‚ and the silver chloride will be filtered‚ washed‚ dried and its mass determined. From the mass of the silver chloride formed and the mass of the original sample‚ you will be able to calculate the percent of silver in the alloy. Because the results are
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GROUP No.: | DATE: 02/14/13 | | NAME: | | EXPERIMENT No.25BACILLUS: Diagnostic Tests | | ASCOLI’S THERMOPRECIPITIN TEST Purpose: used to identify anthrax bacilli in animal hides and meat. Principle: This test was designed to detect B. anthracis antigens in the tissues of animals being utilized in animal by-products and thereby to reveal when these products contained ingredients originating from animals that had died of anthrax. The thermostable antigens involved are common to other
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