BIOLOGY DB015 (ASSIGNMENT) PASSIVE AND ACTIVE TRANSPORT GROUP MEMBERS : ABDUL MUIN BIN ABDUL MALIK (MS1311580012) AIMAN HAKIM BIN A.MANAP (MS1311580006) MUHAMMAD AMIN BIN MAT SAUPI (MS MUHAMMAD FARIZUL BIN AMRAN (MS LECTURER : MISS AFIQAH BT MOHAMED Q INTRODUCTION The various organelles and structure within a cell require a variety of subtances in order to carry out their functions. In turn‚ they form products; some useful and some not. Most of these substances must pass in and
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3. Explain the similarities and differences between diffusion and osmosis. Both are the movement of a substance from an area of high concentration to an area of low concentration. But osmosis is the movement of water through a cell membrane. 4. Define Turgor pressure ( also known as osmotic pressure). The pressure that would have to be applied to a pure solvent to prevent it from passing into a given solution by osmosis‚ often used to express the concentration of the solution 5. What
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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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REVIEW SHEET Lab Report – Lab 3 Addendum – Cell Anatomy and Physioligy PhysioEx Worksheet Mark R. Graham 1455 Betty Court‚ Orange Park FL 32073 BSC2085C - Anatomy and Physiology I - 333738 Fall Term 2010 Larry Chad Winter lwinter@fscj.edu Submitted - 9/18/2010 NAME Mark Graham Cell Transport Mechanisms and Permeability Activity 1: Simulating Dialysis (Simple Diffusion) Chart 1 – Dialysis Results |Membrane (MCWO)
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Abstract I found that this experiment gives me an understanding on how osmosis and diffusion works. In its simplicity‚ it explains the process that our bodies (mainly cells) use all the time. It also showed me that even with the temperature changing‚ it doesn’t drastically change the rate of diffusion. Introduction Diffusion is important in all living systems. Osmosis is the passage of water from a region of high water concentration through a semi-permeable membrane to a region of low water
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The purpose of this lab was to observe how molarity concentration affects diffusion.The lab was primarily based on osmosis and diffusion. Diffusion is when the movement of molecules from a high concentration that go to a low concentration to a high concentration to eventually reach an equilibrium. Osmosis is when water will diffuse from high water concentration to low water concentration to reach equilibrium. When the solutions are different the lower concentration solute is hypotonic while the higher
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life functions F. Homeostasis - The tendency of living organisms to control or regulate changes in their internal environment G. Diffusion - The movement of molecules from an area of high concentration to an area of low concentration H. Osmosis - The diffusion of water across a selectively permeable membrane I. Osmoconformer - An organism that allows its internal concentration of salts to change in order to match the external concentration of salts in the surrounding water J. Osmoregulator
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membrane traffic in lab‚ explain the differences between the solutions hypertonic‚ hypotonic‚ and isotonic and how they respond using the understanding of the cell membrane structure‚ types of transport mechanisms such as active‚ passive‚ diffusion‚ osmosis‚ and explain the movement of particles moving across the cell membrane. In this lab was divided into two parts. The first part was varying the concentration and the second part was varying the temperature. All cells are controlled by a cell membrane
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as in the left‚ would you be able to observe any diffusion? No they would be equal Does being unable to observe diffusion necessarily mean that diffusion is not taking place? No the rate of diffusion may be either very rapid or gradual. 4th : Osmosis Did you observe any pressure changes during this experiment ? if so in which beakers and which membranes? I did not notice any pressure changes. Why? Both of the pressures in the beakers were not equal. Did the Na/Cl diffuse from the left beaker
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solution from another by osmosis. The higher the osmotic pressure of a solution‚ the more water tends to move into it. Pressure must be exerted on the hypertonic side of a selectively permeable membrane to prevent diffusion of water by osmosis from the side containing pure water. Osmotic concentration refers to the measure of solute concentration‚ defined as the number of osmoles of solute per litre of solution. These particles must be osmotically active for the process of osmosis to take place. Keeping
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