Part A The Urey and Miller was conducted in 1952 and published in 1953 by Stanley miller‚ under the supervision of Harold Urey at the University of Chicago. It proposed the possible chance of the inorganic material of some of the basic building blocks of life‚ given that conditions resembled those of the ancient earth. This was the first ever experiment to test Alexander Oparin ’s and J. B. S. Haldane ’s hypothesis about the evolution of pre-biotic chemicals and the origin of life on Earth. They designed
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1.1.4/1.2.1 UREY and MILLER Description Reason Result Nature & practice of Science Contribution to theories of origin of life Water‚ methane‚ ammonia and hydrogen were sealed inside sterile glass tubes and flasks connected in a loop (the atmosphere). One flask was half-full of water and the other contained a pair of electrodes. The water was heated to evaporation (the oceans); sparks were fired between the electrodes (lightning) through the atmosphere and water vapour. It was then cooled again
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Ashley Perez Biology 124 September 15‚ 2013 Discussion Paper In the experiment of Mr. Miller‚ I understand that he sealed in certain elements that stimulated the conditions that he thought were presented in the beginning of earth’s time and tested the chemicals that would be there a few days later. Miller predicted that prehistoric earth had certain chemical reactions that made organic compounds from inorganic base. The experiment used water‚ methane‚ ammonia‚ and hydrogen. The chemicals
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On Friday July 15‚ my group of medical student visited the simulation laboratory. After climbing a couple sets of stairs we were broken off into three different groups for three different sets of activities. The first for me a combination of a couple of simulations. The first one was a simulation designed to help surgeons further develop their skills. We used small clamps to pick up and move rings to different poles. This seems quite simple but we had to do it looking at a monitor that projected
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when the atmosphere and environment were different to those presently found on earth Archaea are single cell micro-organisms with no nucleus‚ it use anaerobic respiration (able to living in the absence of Oxygen) and live in extreme environment/condition such as high temperature‚ acid-rich‚ saline area etc. those environment are rich in minerals but hazardous to other organisms. Archaea’s population decreased after earth filled with oxygen‚ other than that‚ current archaea is very same as ancient
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kill the organism. Q: Based on the conditions of early Earth‚ what conclusion can you draw about the amount of anaerobic respiration that was occurring at Earth’s beginning? Explain your answer. A: The atmosphere of early Earth was made up with almost of different nitrogen gases‚ water vapor and carbon dioxide. There wasn’t any pure oxygen or I should say there wasn’t any breathable oxygen in the air in those days. The first form on earth had to develop in the absence of oxygen using the anaerobic
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Abiotic Features | Terrestrial | Aquatic | Buoyancy | Air provides lift and flotation support for organisms | Water uses an upward force on an object and in it which allows flotation. | Viscosity (resistance to movement) | Air has a low viscosity. This makes it easier for organisms to move through it. | Water has a high viscosity. This makes it more difficult for organisms to move through it | Light | Light can pass freely through air. Plenty of light is available to land organisms. Dense plant
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scientific community was examining what kind of environment would be needed to allow life to begin. In 1953‚ Stanley L. Miller and Harold C. Urey‚ working at the University of Chicago‚ conducted an experiment which would change the approach of scientific investigation into the origin of life. Miller took molecules which were believed to represent the major components of the early Earth’s atmosphere and put them into a closed system The gases they used were methane (CH4)‚ ammonia (NH3)‚ hydrogen
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ABIOTIC FACTORS AND ITS ENVIRONMENT Abstract Abiotic factors in the environment can affect an individual’s conditions‚ habits and activities. Tropics have altering weather conditions even if there is no seasonality. It may be sunny at a certain period of time then it will be overcast all of a sudden. Testing abiotic components would help us show diversity in different kinds of environment. Three varied location were selected; A classroom‚ a busy street (Recto Ave.) and the university garden
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J1.7 OBSERVATION-QUALITY ESTIMATION AND ITS APPLICATION IN THE NCAR/ATEC REAL-TIME FDDA AND FORECAST (RTFDDA) SYSTEM Yubao Liu*‚ Francois Vandenberghe‚ Simon Low-Nam‚ Tom Warner and Scott Swerdlin National Center for Atmospheric Research/RAP‚ Boulder‚ Colorado 1. INTRODUCTION In the last three years‚ the National Center for Atmospheric Research (NCAR) and the Army Test and Evaluation Command (ATEC) have been developing a multi-scale (with grid sizes of 0.5 - 45 km)‚ rapidly cycling (at
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