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Wednesday, March 20, 2019

Essay --

Theresa ManganielloDecember 17, 2013Osmosis Lab reportBio Honors (Yellow)Creating a Semi-Perme fit membrane1.Define osmosis.The diffusion of water through selectively permeable membranes 2.What is a semi-permeable membrane?A semipermeable membrane, also termed a selectively permeable membrane, a partially permeable membrane or a differentially permeable membrane, is a membrane that testament allow definite molecules or ions to pass through it by diffusion and occasionally narrow facilitated diffusion. 3.What is dialysis thermionic valve?Dialysis vacuum tube is a type of semi-permeable membrane sub port system made from regenerated cellulose or cellophane. It can be used for diffusion with solutes or osmosis if used with water only. 4.What molecules are able to pass through the dialysis tubing? Unable to pass through the dialysis tubing?Selective permeability of dialysis tubing shows ions and molecules can pass through the dialysis tubing. Dialysis tubing is not permeable to sta rch because starch is too large.. 5.What is distilled water?Distilled water is water that has been purified through a process of heating and cooling. 6.What is the common name for sucrose? Draw a molecule of sucrose.Table Sugar 7.Develop your hypothesis with your lab companionI think that the more time each bag is given, the heavier it lead get. So my hypothesis isIn this lab, the bags with sucrose and unknown solvent testament be heavier than the bags with water, and as time goes on the bags with sucrose will give birth more mass than the others. HypothesisIn this lab, the bags with sucrose and unknown solution will be heavier than the bags with water, and as time goes on the bags with sucrose will have more mass than the others. Materials-6 pieces of 15... ...because it reacted in the same way in which the sucrose did. In this lab, I created a imitate, and observed the model of a semi permeable cell membrane. I thought that the bags with sucrose and unknown solution will be heavier than the bags with water, and as time goes on the bags with sucrose will have more mass than the others. I was able to accept my hypothesis, and prove it true through the lab. Bag one fundamentally stayed the same, and five and six went down. Bags 2-4 all increased drastically in mass, proving my hypothesis. This lab mirrors what some scientists do every day, whether it be creating models, or studying cells. No matter where we go, science will always be with us. Work cited liveliness How Osmosis Works. Animation How Osmosis Works. N.p., n.d. Web. 12 Dec. 2013.Learning By Osmosis. Something to Shout About. N.p., n.d. Web. 17 Dec. 2013.

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