Practical 7 Osmosis Name: Diana Baktybayeva Tutorial Group: D Lab Partner: Nurlan Mukazhanov Day: Monday afternoon Date: 17.11.14 Title: Osmosis Introduction. Osmosis is a particular type of passive transport involving the movement of water molecules from the region of low solute concentration to the region of high solute concentration through semi permeable membrane‚ which allows movement of solvent molecules‚ but not solute. The main principle of osmosis is to equalize
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Biology laboratory work: Osmosis observation Measuring the dependence of net mass gain in potato pieces on concentration of sugar solution By Jonas Kulikauskas Siauliai Didzdvaris Gymnasium Hypothesis: The more sugar in solution‚ the more potato mass will decrease. Aim: To see how potato mass will change at different concentration solution. Research question: How the mass of potato will change at different concentration solutions? Variables: Dependent: solution concentration. Independent:
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effect of concentration of acid on the rate of diffusion in agar blocks? Aim: To investigate how the concentration affects the rate of diffusion of hydrochloric acid through agar blocks Research Question: To determine how will different concentrations (0.1M‚ 0.2M‚ 0.3M‚ 0.4M‚ 0.5M) of hydrochloric acid affect the rate of diffusion of sodium chloride through agar blocks? Introduction-include prediction; information you have researched before Diffusion refers to the passive movement of molecules along
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and air as the control. When performing this experiment‚ the main element to consider is hypertonic‚ hypotonic and isotonic solutions and how they relate to osmosis. Osmosis is the process where a fluid passes through a semipermeable membrane‚ which moves from an area which the solute is present in high concentrations. As a result of osmosis‚ there will be an equal amount of fluid on either side of the barrier‚ creating an isotonic solution. When cells are placed in an isotonic solution‚ the movement
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N/C .5cm N/C N/C Molecular Weight Distance Traveled Speed of Diffusion Blue Dye 793g 20.00mm 600mm/hr Red Dye 496g 45.00mm 1350mm/hr Aloe Vera Gel Molecular Weight Distance Traveled Speed of Diffusion Blue Dye 793g 15mm 450mm/hr Red Dye 496g 25mm 750mm/hr 1. The red dye diffused faster in both materials. 2. Yes‚ since the red dye is lighter it diffuses faster. 3. The rate of diffusion does change after time. The longer the dye sits the less it spreads in
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Supply chain of Betel Leaf: Preface: In perspective of supply chain of betel leaf‚ this paper has been showed the supply chain of betel leaf within the sylhet city. At the very beginning we discussed regarding betel leaf such as vernacular name‚ Bangladeshi’s betel leaf‚ area of cultivation‚ its varieties etc. So this part will show the Inventory process‚ Transportation‚ Location and Distribution process of betel leaf within the sylhet city. Description: The betel leaf is known as Paan in Assamese/Urdu/Hindi/Odia/Bengali
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many of us don’t want Mr. Poison Leaf to declare that the world’s salvation comes from whims‚ irrationality‚ and delusions. Still‚ we feel a prodigious pressure to smile‚ to be nice‚ and not to object to his batty criticisms. Mr. Leaf likes to argue that public opinion is a reliable indicator of what’s true and what isn’t. Even if there were a faint glimmer of truth in that argument‚ it would be extremely faint. The truth is that many people are worried that Mr. Leaf will use both overt and covert
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Osmosis is the selective diffusion of water and other molecules across membranes‚ which in the case of living organisms‚ the solvent (water) would have net movement across a selective permeable membrane. Osmosis only occurs when a membrane such as that of a cell is permeable to water molecules but not to specific solutes (Tortora & Derrickson 2014). Certain simple molecules such as oxygen‚ water and carbon dioxide can travel across the cell membrane by osmosis‚ a passive process similar to other
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Premium 609 Words 3 Pages Diffusion and Osmosis of Solutes and Water Across a Membrane Diffusion and Osmosis of Solutes and Water Across a Membrane Brittany Bacallao Nova Southeastern University Abstract: This experiment gave a visual understanding of osmosis and diffusion. The first experiment proved that solutes would move down a concentration gradient if permeable to the sele Premium 2179 Words 9 Pages Diffusion Lab Report Abstract: The importance
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story “The Last Leaf” the false perception of this story has a powerful outcome. Sue led Johnsy to believe that the last leaf had not fell off from the vine. As Johnsy looked out of the window she could see the little leaf hanging on for dear life. Even through the snow‚ and the pouring down rain it stayed firmly attached to it’s vine. Johnsy counted as all the other leaves fell from it’s vine. But for some reason this little leaf held on strong. She began to wonder if this leaf was sending her a
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