And Osmosis Abstract In this Diffusion and Osmosis lab a total of three experiments were performed. For experiment 5.1 we investigate diffusion through a selectively permeable membrane and the many factors that influence the rates of diffusion. In experiment 5.2 we investigate both animal and plant cells in different molar solutions and the different osmotic behaviors within the cells. In experiment 5.3 we test the osmolarity of plant cells through the usage of potato tuber cells. In experiment
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specializing in violent behavior that has crossed the Mexican/American border to include recruitment of United States young citizens. Because it is not a matter of when the Zetas will breach our border areas but how forcefully and repeatedly‚ a Red Cell analysis is imperative to understand their criminal mindset and predict their imminent and future intentions. Penetration beyond our borders has already occurred not only with the shipment of drugs but also by way of attacks on U.S. law enforcement
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example of diffusion is red food coloring. When you put food coloring in a glass of water the color will spread through the water until all of it is a red tint. This shows the molecules of the food coloring equally distributed in the area of the water. Osmosis is a special type of diffusion where only the water molecules move. This happens through a selectively permeable membrane. It allows water and oxygen to move freely across the membrane. Osmosis only has an effect when the cell is in a hypotonic or
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Table Nr 1. Color changes in IKI test for presence of starch and for presence of sugar in Benedict’s test |Part 1 |Original content |Original color |Final color |Color after Benedict’s test | |Sausage casing |glucose and starch |clear |clear | | |Beaker |distiled water |transparent |transparent
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according to Campbell et al. (1999)‚ water is the major constituent of cells. Reactions vital to life occur under aqueous conditions in the body and cells of all organisms‚ and the concentrations of reactants necessary for these reactions depend upon the amount of water present (Pough et al. 2004). By the process of osmosis‚ water moves from areas of lower to areas higher concentration across a water- permeable membrane‚ like a cell membrane (Nybakken and Bertness 2005). In order to maintain the proper
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Blood Film Staining – Normal & Malignant Cells Case Study 1 Male 72 yrs Hb 77g/l (NR 130-180) RBC 2.23 x 10¹²/l (NR 4.5-6.5) MCV 88fl (NR 76-96) WBC 98.2 x 10/l (NR 4-11) Platelets 28 x 10/l (NR 150-400) A) Calculation of PCV (packed cell volume or haematocrit) PCV = RBC (cells/l) x 10¯¹² x MCV (fl) RBC = 2.23 x 10¹²/l MCV = 88fl or 88 x 10/l PCV = 2.23 x 88 x10 PCV = 196.24/1000 PCV = 0.196 (NR 0.4-0.54) B) Calculation of MCH (mean cell volume) MCH = Hb
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1.22 0.86‚ 0.86‚ 1.98 1.23 0.82 2 1.11‚ 1.10‚ 1.26 1.16 0.87‚0.96‚ 0.85 0.89 -23 4 1.26‚ 1.27‚ 1.22 1.25 0.98‚ 1.01‚ 0.98 0.99 -20.8 6 1.50‚ 1.44‚ 1.31 1.42 1.43‚ 1.23‚ 1.36 1.34 -5.63 8 1.41‚ 1.17‚ 1.26 1.28 1.08‚ 1.21‚ 0.97 1.09 -14.84 10 1.29‚ 1.17‚ 1.18 1.21 0.94‚ 1.01‚ 0.96 0.97 -19.83 Table to show the 2nd experiment Sucrose Concentration (%) Mass before
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ESPECIALLY THICK IN ELASTIC ARTERIES‚ CONTAINS SMOOTH MUSCLE AND ELASTIN 4 CHARACTERISTICS OF TUNICA EXTERNA MOST SUPERFICIAL TUNIC‚ HAS A SMOOTH SURFACE TO DECREASE RESISTANCE TO BLOOD FLOW 5 WHY ARE VALVES PRESENT IN VEINS BUT NOT IN ARTERIES? Veins need valves to create pressure to pump the blood to the heart. Blood flows away from the heart and‚ therefore‚ the pressure is not required. Helps against gravity. 6 NAME TWO EVENTS OCCURING WITHIN THE BODY THAT AID IN VENOUS RETURN. 1. Respiratory
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the Rate of Osmosis Using a Glucose Solution Melissa Werderitch Biology 157 11/6/06 Introduction In a journal article written by Florian Lang‚ osmosis is essentially explained as the flow of water from one area to another that are separated by a selectively permeable membrane to equalize concentrations of particles in the two locations (Lang‚ 1997). Osmosis is able to maintain osmotic pressure and regulate a cell’s volume. In a hypotonic () or hypertonic () environment‚ a cell may be liable
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Biology Course Work MyungJae BAEK (10Bio02) Do NOT delete anything I have written in red. Make any corrections in blue so I know what to re-read Osmosis Diffusion is the net movement of particles from an area of high concentration to an area of low concentration. Then what is osmosis? Basically‚ osmosis is the same action with diffusion but in water. To describe more precisely‚ osmosis is the net movement in water across partially permeable membrane‚ which mean the membrane allows
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