Osmosis The purpose of this lab is to study how membranes of plant and animal cells react when exposed to different solutions. The first experiment involves purple onion skin and the second involves rat blood in various solutions. I needed to understand certain terms before preforming this lab to be able to efficiently explain what is happening to the cells. Diffusion is the tendency of a substance to move down its concentration gradient from a more concentrated to a less concentrated area.
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Question 1: How does Osmosis works It refers to the movement of water molecules from an area of high-level water concentration‚ that is‚ a dilute solution‚ to an area of low-level water concentration‚ that is‚ a strong solution through a semi-permeable membrane. (Passmyexams.co.uk‚ 2015) Actually‚ water moves in a bi-directional manner with the aim of leveling up the concentration. However‚ a high number of water molecules move from the fresh water towards the salty water. The outcome
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while the other two potatoes remained firm. There was also an awful odor that only came from the potato in the tap water. Conclusion: The hypothesis was correct. The 40% salt solution killed the sailor. This solution was hypertonic which causes osmosis to move the water out of the cell. The sailor then became too dehydrated and died. Salt absorbs water‚ which is why drinking salt water is not good for
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RADIATION DETECTION IN VEGETABLE LEAVES: A COMPARATIVE CASE STUDY IN COASTAL AND HINTERLAND REGIONS OF AKWA IBOM STATE BY Godfrey T. Akpabio‚ Ime E. Essien And Bassey E. Bassey. Department of Physics‚ University of Uyo‚ Uyo. ABSTRACT Radioactive radiation level was detected for five samples of vegetable leaves namely: Water leaf‚ Fluted Pumpkin‚ Editan Lasientera africana and Afang Gnetum africanum. These vegetable leaves were collected from Uyo (interland region) and Ibeno
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Animals‚ Vegetable‚ Miserable is an article written by Gary Steiner. It discusses the animals sufferings before they are served in a dining table. If is it wrong or inhumane to kill animals for consumption. However‚ the article authored by Natalie Angier states that apparently plants like other living organism are vulnerable and have emotional intelligence.Thus‚ the question arises‚ Should every individual eat meat or should not eat meat? The answer‚ eat meat but eat less of it. Keep everything balanced
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AHP216 04/16/13 I. Introduction: The purpose of this experiment is to observe the osmosis reaction in a potato with salt and water. In cooking cooks will soak their cut potato’s in water if they will not use them immediately. This allows the potato’s to be used later without turning color. The experiment shows the flow of water through the membranes of the potato with salt over a period of four hours. II. Objective: The reaction of the potato to the side submerged in water and the half excavated
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Diffusion and Osmosis Introduction Tonicity refers to the concentration of solutes in a solution (Lab 6-7). There are three stages of tonicity: Isotonic‚ hypertonic and hypotonic. Four unknown solutions were given and labeled as followed: Solution A‚ Solution B‚ Solution C‚ and Solution D. Since potato cells were used for this type of experiment‚ in an Isotonic solution the solute and water concentration are the same as inside the cell in which the isotonic solution contains 0.9% NaCl. In other
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Full Length Research Paper Nutritional potential of two leafy vegetables: Moringa oleifera and Ipomoea batatas leaves Ibok Oduro‚ W. O. Ellis and Deborah Owusu* Department of Biochemistry and Biotechnology‚ Kwame Nkrumah University of Science and Technology‚ Kumasi- Ghana. Accepted 30 January‚ 2008 Levels of some nutrients in Moringa oleifera leaves as well as seven varieties of sweet potato (Ipomoea batatas) leaves were determined using standard analytical methods. Crude protein ranged from
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Brownian motion This is‚ presumably the random drifting of particles suspended in a fluid (a liquid or a gas) .This movement was discovered and later named after botanist Robert Brown (1773-1858). He was a Scottish botanist and palaeobotanist who made important contributions (including Brownian motion) to botany largely through his pioneering use of the microscope. The scientist who made Brownian motion famous is Albert Einstein‚ who brought the phenomenon to the attention of the larger physics community
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my aunt’s turn and when we went to eat the mashed potatoes they were super salty. After thanksgiving dinner that year I became interested in figuring out how the using the same recipes the outcome could be so different. Background Information: Osmosis is the of a solvent across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration. The water being the solvent can move across the membrane but the salt
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