Evolution Lab Report Marcos Chapa July 3‚ 2013 BIO 101 Rebecca Avants The purpose of the lab I have conducted is to analyze how altering the finch’s environment would affect the evolution of the finches by isolating each population of finches from each other‚ placing them each on a different island. This influence on the species by the environment is called allopatric speciation. One population of the finches that are located Darwin Island‚ which is 1 km‚ and the other population of finches
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Experiment AM1.2—Centrifugal Force Student name JunJie Liu Student ID 1512042 Experiment Date 11 Feb 2015 Lab group Mech 7 Introduction In this lab report we show the basic methods of measuring centrifugal force using two counter balanced bell-cranks spin on a turntable (shows in figure 1) and able to calculate the centrifugal force with given conditions shows in figure 1. *Figure
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methods for spreading harmful bacterium. The purpose of this lab was to collect and observe microorganisms from the environment and the human body and placing into the appropriate media using aseptic transfer techniques. The necessity and value of collecting‚ identifying and analyzing is critical for learning how diseases are acquired‚ spread and therefore prevented. Materials Sterile nutrient agar petri dish Wax Pencil Lens paper Sterile blood agar petri dish Igniter Immersion oil Sterile
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Physics Lab report Aammar Paracha Section MX Feb 6th 2015 OPTICS Abstract: This experiment revolves around using light rays and lenses. The experiment also discusses different properties of light rays. This experiment uses different lenses and measurements to produce images and observes different techniques to obtain the image position. Question and Answers: 1. Use your data to verify the Law of Reflection and then use Snell’s Law to calculate
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Genetically Modified Organisms INTRODUCTION: The purpose of this lab was to identify if non-labeled food products are actually genetically modified foods. Before we could begin testing this theory we first had to gain an understanding about genetically modified organisms in general. This was rather easy because if you have been to any grocery store lately you have without a doubt seen products with labels saying "GMO-free" or even "contains only non-GMO ingredients." GMO actually stands for
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A. Goal and Purpose: Session 1: In this lab‚ we will achieve a simple Friedel-Crafts alkylation of anthracene. The choice of anthracene as an aromatic substrate stems from two considerations. First‚ there is a question of regioselectivity. Second‚ anthracene and its derivatives are highly visible under UV light. Session 2: In this lab‚ we will complete a partial conversion of 9-acetylanthracene using m-chloroperoxybenzoic acid (mCPBA). We will also determine by NMR‚ the regiochemistry of the
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’Neil 2002). The particular conditions that had to exist for this to apply were that the population had no mutation‚ had no natural selection‚ was a large population‚ had only random mating‚ and had no migration. For the cases to follow later in the lab‚ Cases 1 and 2 exemplify Hardy-Weinberg conditions. All of the others either have selection or not enough members in the population‚ which will be the most-closely observed
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. If the speed of decomposition of hydrogen peroxide is related to the temperature then in high temperature it will speeds the decomposition of hydrogen peroxide. Materials ● Catalase ● Hydrogen peroxide 3% and 1% ● Forceps ● Filter paper discs ● Water ● Ice ● Water baths ● Vials ● Marking Pencils ● Stopwatch Procedure 1. Set up an ice bath (0°C)‚ a room temp water bath‚ a 37°C bath and a boiling water bath 2. Place 5 ml of catalase at 100 units/ml in each 4 test tubes. Place 1 test tube in each of the
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recrystallization and how this process removes the impurities from a pure solid compound. The methods used to achieve this objective were also hot vacuum filtration in order to remove suspended solid impurities‚ and isolating the pure acetanilide. In the next lab‚ percent recovered was obtained through weighing the acetanilide sample as well as comparing its melting point range. In this experiment‚ the sample‚ acetanilide was weighted to be 1.523 grams. The sample appeared to be a pale mixture of brown flakes
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the number of moles and grams of salicylic acid and acetic anhydride can be answered. Methods/ Material: Capillary tube TLC Plates Gloves 250 mL‚ 600 mL beakers Salicylic acid Acetic anhydride 85% phosphoric acid Buchner funnel Hot plate Filter paper 95 % of ethanol FeCl3 Glass jar Weigh approximately 1.5 g salicylic acid and record the exact mass. Add 3.5 mL of acetic anhydride to it and add four drop
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