Noel Arackal 1.25.16 Bisc 4930 Experiment No. 1 – Varying Extracellular Concentration Introduction: This experiment sets out to determine the tonicity of solutions with varying concentrations of sodium chloride on the red blood cells of sheep by measuring the transmittance of a red blood cell/NaCl solution with a spectrometer. This is done in order to study the effects of solutions containing varying levels of tonicity to red blood cells. Tonicity describes what happens to a cell when it is
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How sodium chloride concentration affects the germination‚ growth and development of Brassica rapa. Osumi‚ K.‚ Nihei‚ B.‚ Takanishi‚ K.‚ Nakamura‚ C.‚ Warehime‚ R. Period 2. 03/05/17 Introduction: To have a successful germination‚ the plant seed needs a sufficient amount of water and oxygen present. Other conditions include room temperature‚ and the amount of light intake. Hydration of a seed‚ is an essential step for seed germination (Martínez-Andújar‚ 2014). Plants tend to germinate better in
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Determining the unknown concentration of HCl via heat of neutralization of a reaction involving strong electrolytes and weak electrolytes. Myeongwon Lee 20522885 Partner: Frank Wong TA: Afsoon CHEM 120L – Earth Science & Chem 149 Section: 004 Tuesday‚ November 26th‚ 2013 Introduction All chemical changes are accompanied by change in energy and this energy is in form of heat. The energy change of a reaction that happens at constant pressure is defined as heat of reaction or enthalpy change and the
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Exploration How do increasing sucrose concentrations of 0.0 mol dm3‚ 0.2 mol dm3‚ 0.4 mol dm3‚ 0.6 mol dm3 and 0.8 mol dm3 affect the osmolarity point of potato cells‚ where it is investigated how osmosis changes the weight of the potato cells‚ measured by the percentage change between the initial and final mass of the potato? Independent Variable: Increasing sucrose concentrations Dependant Variable: Mean percentage change in mass of potato cells All cells have a protective barrier‚ one which
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Osmosis investigation Aim: To investigate how sugar concentration affects the mass or size of a potato and find out the sugar solution. Introduction: Osmosis is the movement of water molecules across a partially permeable membrane form a region of high water concentration to a region of low water concentration until the concentration on both sides is equal. This means that osmosis is like diffusion involving water molecules. Osmosis occurs across a partially permeable membrane‚ with holes
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The aim of this experiment is to better understand the process of fermentation of yeast in different concentrations of sucrose. The experiment worked with yeast and sugar (sucrose and glucose) to determine the rate of fermentation by testing the pressure of C02 in the test tube. The experiment tested the metabolic capability of yeast anaerobically meaning no oxygen was present (this was ensured by the thin layer of oil on the top of the solution). This means that the metabolic rate of the yeast could
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they depicted true thoughts of Jewish captives during this time period. Though most of the novel described life in concentration camps‚ three lines truly portray the feelings‚ emotions and mindset Jews had under the Nazi regime. "Never shall I forget those moments that murdered my God and my soul and turned my dreams to ashes..." (Wiesel 34). This line shows the impact concentration camps had on Wiesel’s life‚ soul‚ and belief. As a child‚ Wiesel became Godless for he saw no God of his would allow
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War World 2‚ Concentration Camps During War World 2‚ Hitler authorized the SS‚ after December 1934‚ to be “the only agency authorized to establish and manage factories‚” called concentration camps‚ like Ravensbruck (ushmm.org). These camps were built throughout Germany and the system expanded as the Nazis took over. The system of the camps grew more deadly and affected many camps‚ like Ravensbruck. Ravensbruck was a camp mainly for women‚ and was deadly. In the end of the war‚ Ravensbruck was
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Dachau concentration camp Dachau was not horror camp not like Auschwitz and Belzec that killed over 1‚700‚000 together.Auschwitz was famous for being the most horrific camps‚but it was not the first or long lasting concentration camps.Dachau camp was made of an old World War I munition factory.SS Weinrich Himmler announced the camps creation‚so people (Jews) were put on trains to arrive at Dachau.All of the many concentration camps (Death camps) made medical experiments on some of their
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AIM The aim of this investigation is to explore the effect of different concentrations of bile salts on the time taken for the lipase enzyme to break down fat. BILE Bile is a brownish bitter alkaline fluid produced by the liver and made by the hepatocytes from water‚ bile salts‚ bile pigments cholesterol and phospholipids and stored in the gall bladder. Bile is directly connected with digestion. It is released sporadically into the small intestine (duodenum) which is part of the gut in order
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