150 Lab PROBLEM SET 1 1. The data below were obtained after performance of Ex. 2 as stated in your MCB 150 lab manual. a. Estimate the number of total bacteria‚ actinomycetes‚ fungi and algae per gram (dry weight) of soil collected from the IBS garden pH: 6.0 ODW: 8.6 grams Colony Counts: PDA 10-1: 210‚ 190 AMA 10-4: 125‚ 119 SCA 10-4: 80‚ 62 10-2: 20‚ 34 10-5: 17‚ 29 10-5: 18‚ 2 Algal Medium (no. of + tubes/ no. of inoculated tubes): 10-1: 5/ 5 10-2: 5/ 5 10-3: 3/ 5 10-4: 1/ 5
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Chemistry Summary The particle theory: 1. Matter is made of tiny particles 2. Particles of matter are in constant motion 3. Particles of matter are held together by very strong electric forces 4. There are empty spaces between the particles of matter that are very large compared to the particles themselves. 5. Each substance has unique particles that are different from the particles of other substances 6. Temperature affects the speed of the particles. The
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08TH SEPTEMBER 2009 Topic of the Assignment: DOMINANT PRICE LEADERSHIP Student Signature Faculty Signature DOMINANT PRICE LEADERSHIP Dominant price leadership exists when a. one firm drives the others out of the market. b. the dominant firm decides how much each of its competitors can sell. c. the dominant firm establishes the price at the quantity where its MR = MC‚ and permits
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BIOL 140 Lab—The Chemical Composition of Cells Name ____________________________ I) Introduction All cells contain four major types of macromolecules: carbohydrates‚ lipids‚ nucleic acids‚ and proteins. In today’s lab‚ we will be studying three of the four-proteins‚ carbohydrates and lipids. Various chemical tests can be used to detect the presence of each of these molecules. Most of the tests involve a color change visible to the eye. If a color change is observed‚ the test is considered positive
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Calaveras County. Twain’s journey ended in the silver-mining town of Virginia City‚ Nevada‚ where he became a miner. Twain failed as a miner and worked at a Virginia City newspaper‚ the Territorial Enterprise. Here he first used his pen name. On February 3‚ 1863‚ he signed a humorous travel account "Letter From Carson – re: Joe Goodman; party at Gov. Johnson’s; music" with "Mark Twain." Twain moved to San Francisco‚ California in 1864‚ still as a journalist. He met writers such as Bret Harte‚ Artemus
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Significant chemical waste is generated from the labs on campus: 1. To find out how are these chemicals disposed. 2. To suggest what is the optimum way of disposing them. 3. Identification of the risks involved. Contents 1. PROJECT OBJECTIVES……………………………………………1 4. INTRODUCTION…………………………………..........................5 4.1 Waste…………………………….……………..........................5 4.2 Chemical Waste……………………………………………….6 4.3 Hazardous Chemical Wastes…………………………….7 4.4 Non-Hazardous Chemical Wastes………………
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Observations of Chemical Changes Purpose: The purpose of this experiment is to predict and examine chemical changes/reactions among common chemicals found in consumer products at a macroscopic level. Procedure: The procedure of this experiment was to carefully mix different chemicals together using the chemical filled pipettes and the 96-well plate and determining what chemical reactions occurred. Data Table: Observations of Chemical Changes Experiment 1: Observations of Chemical Reactions |
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The chemical formula for BPA is (CH3)2C(C6H4OH)2. BPA was first synthesized in 1891‚ and was recognized as a synthetic estrogen in the 1930s. The Food and Drug Administration (FDA) approved the use of BPA in 1960 to manufacture certain plastics and epoxy resins. This chemical compound of synthetic estrogen is used to harden plastics and resins‚ while keeping them lightweight. BPA is found in a majority of everyday products‚ such as food storage containers‚ water and baby bottles‚ food can linings
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Introduction What is chemical change? Chemical change is the alteration of a substance into one or more different substances with different properties (also called chemical reaction). The four different types of chemial reations are synthesis‚ decomposition‚ single displacement‚ and double displacement. Synthesis is when atoms and/or molecules combine to form larger molecules. Decomposition is when a large molecules are split into elements or smaller molecules. Single Displacement has an element
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THE ETHICS OF PRICE GOUGING Matt Zwolinski Abstract: Price gouging occurs when‚ in the wake of an emergency‚ sellers of a certain necessary goods sharply raise their prices beyond the level needed to cover increased costs. Most people think that price gouging is immoral‚ and most states have laws rendering the practice a civil or criminal offense. The purpose of this paper is to explore some of the philosophic issues surrounding price gouging‚ and to argue that the common moral condemnation
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