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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I did this lab to find out the differences between chemical and physical changes. I also did this lab to learn the signs that would indicate the chemical reactions and physical changes. I needed to learn the odor change‚ color change‚ bubbles or gas‚ irreversible‚ temperature changes and finger prints. By the end of the lab‚ my goal was to be able to didtinguish easily the difference between chemical and physical changes. Question #1 answer. 1. Gas. 2. Dissolved in water. 3
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Santiago Canales Partner: Cody Patterson MR. G Physical and Chemical Changes lab Pre lab discussion 1. a- chemical change b- chemical change c- physical change d- chemical change e- physical change 2. Change in color‚ gas‚ light or smoke and heat. 3.Becuase if the temperature changes you can notice it better this way. 4. I will use goggles and cloves all the time‚ I also need to point dangerous materials away from other people and I should be specially cautious with hydrochloric
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Desiree Trujillo March 6th‚ 2013 Lab # 3 Chemistry 101 Physical & Chemical Properties Purpose To examine the physical and chemical properties of multiple natural chemical substances‚ and to determine which changes are chemical and which are physical. Data Solubility or Reaction | SubstanceName | Color | Odor | Effectof Heat | ColdH2O | HotH2O | LitmusTest | DiluteHCl | DiluteNaOH | Mg | Silver
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Experiment In this lab we were asked to observe changes and colors when mixing two or three chemicals together. The actual experiment itself used twelve different pipits and three chemicals I selected from my house. To begin‚ I first gathered everything‚ including the 96 well plate‚ 24 well plate‚ goggles‚ and gloves along with the observations of chemical changes bag. I set it up all on the the kitchen table that had paper towels on it. Next‚ I made my data table so that I could record my reactions
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bonds formed between two ions by the transfer of electrons. The speed at which a chemical reaction proceeds is known as the rate of reaction. The rate of almost every reaction can be increased or decreased due to different factor. Scientists have identified five factors that affect the rate of reaction. The five factors are temperature‚ concentration of the reactants‚ surface area‚ agitation (mixing)‚ and catalyst (chemical helpers). The collision theory states that the rate of a reaction is directly
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Chapter 2--Enterprise Systems Student: ___________________________________________________________________________ 1. One of the primary goals of implementing an ERP system is to standardize systems across multiple locations and multiple divisions. True False 2. Large multilocation and multidivision companies are challenged to see the greatest benefits from ERP systems. True False 3. Early adopters of ERP systems were in the business of making products. True False 4. ERP systems
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Case Analysis: Tucker Company In partial fulfilment of the requirements in MGT101: Victorio‚ Judith Merari B. Rubiano‚ Ferrando L. Regondola‚ Joyce Hanna R. Malazarte‚ Virgilio II‚ B. Castillo‚ Aaron T. Carandang‚ Loise Ann M. August 29‚ 2012 I. POINT OF VIEW This case analysis takes the point of view of Mr. Harnett‚ the president of Tucker Company. Being the top manager‚ he is the one responsible for overseeing the current status and developments of the company. Moreover‚ he is the one in-charge
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Introduction: 1) This report considers the potential purchase of the sodium chlorate producing plant in Collinsville‚ Alabama by Dixon Corporation from American Chemical Corporation in October 1979. The reason for this stems from the fact that American Chemical Corporation was attempting at the time to buy a controlling stake in Universal Paper Corporation‚ but the management of Universal contested this on the basis that it would be anti-competitive‚ given that they were both producers of sodium
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The Chemical Basis of Life Chapter Objectives Opening Essay Explain why an understanding of chemistry and the properties of water are important aspects of biology. Elements‚ Atoms‚ and Compounds 2.1 Define matter‚ an element‚ a compound‚ and a trace element. 2.2 Explain how and why iodine‚ fluoride‚ and iron are added to the human diet. 2.3 Distinguish between the size‚ location‚ and properties of protons‚ electrons‚ and neutrons. 2.3 Define the atomic number and mass number of an atom
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