Lab Report on Osmosis and Diffusion.docx

Lab Report on Osmosis and Diffusion.docx - 1 Name Gizachew...

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1 Name: Gizachew Ambaw Lab Report Tile: Osmosis and Diffusion BIOL-1306 SL4 12/10/ 2016 Objective : In this lab, we will be conducting an experiment where we will observe the acts of passive transport: diffusion and osmosis. The experiment will show how molecules in a solution are able to move from an area of high concentration to an area of low concentration. With this, it will also show us how hypertonic and hypotonic solutions exist, as well as how cells try to get back into an isotonic state. In doing so, this lab will allow us to learn why and how diffusion and osmosis happens in all living things. We will be testing the movement of solutes from their area of high concentration to the area of lower concentration that surrounds them and observe what effect the size (molecular mass) of molecules, temperature and concentration has on both of them. Introduction: The cell membrane encloses the contents of all cells, organelles and many cytoplasmic inclusions, and regulates what gets in and out. This is called selective permeability. Selective permeability is necessary for the maintenance of life processes. Diffusion: Diffusion is the movement of particles from where there are many such particles to where there are few; in more scientific language, we say that diffusion is the movement of particles from areas of high concentration to areas of low concentration. Given a cell membrane, molecules will try to diffuse from the side of the membrane where the molecules in question enjoy a high concentration to the other side where the concentration is lower. This movement
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