Since the Grignard reagent can easily react with water‚ all glassware including the 25 ml round bottom flask‚ magnetic stir bar‚ 3 and 5 ml conical vial‚ 50 mL Erlenmeyer flask‚ claisen adapter‚ drying tube and 5 glass pasteur pipets were first added to a 250mL beaker and placed in the oven for 30 minutes. After the completion of the thirty minutes‚ 0.150 g of shiny magnesium turnings and a stir bar was first added to the round bottom flask and the claisen adapter along with the drying tube packed
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Cassie Browne Anthony Lulgjuraj Fly Lab Report Friday 9:30am Mutation #620 X Mutation #644 1) The vial labeled Mutation #620 contained female flies that displayed a mutation in eye color. This mutation causes a change in eye pigment from wild type (bright red) to a dark‚ reddish brown. The males possessed mutation #644. It is a mutation in wing morphology that reduces wing size. A controlled cross was conducted between these two true-breeding mutant flies. Their progeny (F1) being heterozygous for
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Lab‚ Week # 1 BALANCE LAB Introduction The purpose of this lab is to learn how to utilize two different balances to find the mass of different chemicals in the ChemLab program. A balance is an instrument used to determine the mass of a chemical. To accomplish this we use direct weighing and weighing by difference on both the centigram and electronic balances. Equipment 1 Centigram Balances 1 Electronic Balance 1 100ml Beakers 5 Copper Slugs 2 Unknown Weights (Label # 1‚ # 2)
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Report 1: Genetics-411 Population Genetics of Albinism in Zea mays Spring 2013 2/16/2013 Tory Thomason Introduction Zea mays or maize was chosen as the study system for this experiment for many reasons. The phenotype being studied is observable to the naked eye‚ green or yellow plants. It is an important agricultural system used in crop and is an ideal genetic model. Zea mays also has a quick turnaround time from generation to generation and crossing Zea mays
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Waterfront Hotel‚ Singapore Virtual Age: Next Wave of Change in Society a Ali A. Jalali a and Hamid Mahmoodi b Department of Electrical Engineering‚ Iran University of Science and Technology‚ Tehran‚ Iran b School of Engineering‚ San Francisco State University‚ San Francisco‚ California‚ USA drjalali@gmail.com‚ mahmoodi@sfsu.edu ABSTRACT The Virtual Age is the ultimate progress of information technology and knowledgebased environments into a three-dimensional virtual world. We firmly believe
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Experiment 9: THE TANGENT GALVANOMETER; PURPOSE: In this experiment we will measure the magnitude of the horizontal component of the Earth’s Magnetic field by the use of an instrument called a tangent galvanometer. INTRODUCTION: A tangent galvanometer consists of a number of turns of copper wire wound on a hoop. At the center of the hoop a compass is mounted. When a direct current flows through the wires‚ a magnetic field is induced in the space surrounding the loops of
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BIOMAGNIFICATION LAB REPORT AIM The aim of this lab is to model bioaccumulation and biomagnification through a food chain. MATERIALS 100 M&M’s Paper towel to lay M&M’s on 20 small cups labelled “zooplankton” 5 medium cups labelled “minnow” 2 larger cups - one labelled “eel #1”‚ and another labelled “eel #2” 1 bowl labelled “osprey” PROCEDURE The pile of M&M’s represents the phytoplankton population in a lake. The printed “M” on the candy represents the amount of DDT (in ppm)
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Purpose: To find out the densities and to find out the name of the unknown metals. (Based on the extensive and intensive properties) Check up the words mass‚ volume‚ density‚ extensive properties‚ and intensive properties. Where do the units for mass and volume) come from and what do they mean? What is the density of distilled water? What is Archimedes principle? Does temperature affect the density of a solid? Liquid? Gas? Materials: Safety glasses‚ 10‚ 25 or 50 mL graduated cylinders
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Fruit Fly Lab Alycia Fletcher Biology IB HL March 25th 2010 Fruit Fly Lab Introduction Genes can either be sex-linked or autosomal. If a gene appears mostly in one sex chances are the gene is sex-linked and if it appears frequently in both sexes it is most likely autosomal. Using Drosophila melanogaster‚ also known as the fruit fly‚ we will determine whether the gene is sex-linked or autosomal. Drosophila melanogasters have a relatively short life span and are an excellent organism
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Dayanna Chiriboga 02/03/2015 Lab Report #1 Genetics 1 χ² Results : Phenotype Expected Expected Observed Ratio Counts Counts (Eͥ i) ͥ (Oi) Deviation (di) =(EiOi) di² = (EiOi)² di²/Ei Purple 75% 657 642 15 225 .34 Yellow 25% 219 234 15 225 1.03 Χ² = ∑ (di / Ei) = 1.37 According to the chi square chart values we are 80% confident that our hypothesis is correct
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