Osmosis In A Potato :: Papers

Osmosis In A Potato Intro ====== My biology coursework is found round the osmosis process that takes place in potatoes. Osmosis is the intake of a season effect through a selectively permeable membrane. The strength of a common salt resultant rotter have a dramatic residual on the amount the potato can take in, and how it reacts. Here is an utilization of a selectively permeable membrane Salt Solution IMAGEIMAGE tender Weak IMAGE Strong Weak Salt Solution IMAGE Variables An fundamental exigency in my biology experiment is to decide which variable I am going to use and modify. A variable is an aspect of the experiment which can be modified in order to change the outcome of the good osmosis experiment. Below are the variables I have available * Temperature * Solution speciality * Size Of Potato * Weight Of Potato After a cumulus of careful deliberation I have decided to use the solution strength as my variable. I cho se this because it enables me to witness the effect different strengths of solution have on osmosis. Method To carry out my experiment successfully I will need to stick to the diagram below. IMAGE Firstly, I will take 6 turn up tubes with different strength salt solutions and add them to a test tube rack. I will indeed cut up a potato and mea reliable them to make sure they are the required size, for this experiment I have chosen 1.0cm. I will then add two measurements of potato into each test tube. The test tube will then be left everyplace night in a fuming cupboard, and results will be taken the adjacent morning. Fair Test To make sure my experiment is fair I will stand by the following guidelines * Use the same surface test tube. * generate sure each strength is measured exactly. * Make sure each piece of potato is exactly the same size as the next.