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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outcomes of spontaneous bacterial peritonitis in Egypt‚ single center experience prospective study Spontaneous bacterial peritonitis (SBP) is the infection of the ascetic fluid that occur in the absence of a visceral perforation and in the absence of an intraabdominal inflammatory focus such as abscess‚ acute pancreatitis or cholecystitis (Guarner C and Soriano G‚ 2007). Since its initial description in 1964‚ research has transformed spontaneous bacterial peritonitis (SBP) from a
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most contaminated toilet Sink were isolated by dilution technique. The dominant bacterial strains are identified as Bacillus sp.‚ on the basis of morphological and biochemical characteristics. Gram’s staining: Gram positive and rod shape. They were serially diluted and spread on nutrient agar plates. The starch has been hydrolyzed and a clear zone by the addition of iodine solution. Visual identification: When bacterial biomass mixed with silver nitrate solution (pH 7.5) and incubated at 37° C for
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resultant of two of the same bacterial experiments one can work out the amount of bacteria per ml of the original tested source in a more accurate way. A rough estimate of the expected variation (variance) can be achieved by square rooting the number of counted colonies. I.e. if 100 colonies are counted one would do the following √(100 ) which is equivalent to 10. One then takes the colony count number and plusses or minuses the answer to obtain a likely range of the true bacterial count per drop of the
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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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The following show expected colony appearances and morphologies (shapes) of Escherichia coli and Staphylococcus aureus. Note characteristics such as edges‚ color‚ and whether the colonies are rough or smooth in texture. For colony appearances of E. coli and S. aureus‚ scientists often describe what they look like on agar. This is not the microscopic view (for example‚ as with a slide) but a “naked eye” view of how the bacterial colonies look while growing on a medium. (This is one type of culture
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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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Raquel Johnson October 19‚ 2014 Solids: Recrystallization and Melting Points Organic Chemistry 2423 Lab Report: Recrystallization Abstract: The purpose of this lab was to purify an unknown compound by recrystallization. Taking an unknown compound and identifying it by purifying it from its impurities through the use of hot gravity filtration. Then to determine the unknown you were to take the melting point. An unknown compound was recrystallized from hot water to produce 0.99 grams (67% recovery)
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Introduction and Purpose: This lab focuses on how weight affects the time it takes for a rotocopter to fall from a drop height of 1 and 2 meter(s) respectively. The primary goal of this lab is to investigate and explain the relationship of these two factors. During the process of conducting this experiment‚ learning to design a lab will also be achieved. Research Question: What is the effect of weight on the time it takes for a rotocopter to fall from a drop height of 1 and 2 meter(s)? Variable
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