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Osmosis Introduction This Experiment Will Show How Changing Sugar Solutions Causes Potato Cells To Take In or Water By the Process of Osmosis.

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Introduction

Osmosis Introduction This experiment will show how changing sugar solutions causes potato cells to take in or water by the process of osmosis. Definition of osmosis The movement of water from an area of high concentration to an area of low concentration across a selectively permeable membrane. Background information All living things have certain requirements they must satisfy in order to remain alive. These include exchanging gases (usually CO2 and O2), taking in water, minerals, and food, and eliminating wastes. ...read more.

Middle

There are two ways that the molecules move through the membrane: passive transport and active transport. Active transport requires that the cell use energy that it has obtained from food to move the molecules (or larger particles) through the cell membrane. Passive transport does not require such an energy expenditure, and occurs spontaneously. The principle means of passive transport is diffusion. Diffusion is the movement of molecules from a region in which they are highly concentrated to a region in which they are less concentrated. ...read more.

Conclusion

Method * 6 beakers filled with different concentrated sucrose solution, I used 30cm3 sucrose solution each time to make sure I stick to my fair test * I cut out 6 lengths of potato and weighed them * Then I left a piece of potato in each beaker before I re-weighed it * Once I weighed I recorded the changes in my table s below Results molarity weight weight change Change Weight change DW 0.2 0.4 0.6 0.8 1.0 molarity weight weight change Change Weight change DW 0.2 0.4 0.6 0.8 1.0 ?? ?? ?? ?? ...read more.

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