Coursework.Info - Inspiration in an Instant

On the left is an image preview of every page of this document, and below are the first 150 words with formatting removed:

Investigation Into Distinguishing Between Old and Fresh Potatoes By Means of Osmosis Scenario: When buying root vegetables at a supermarket, how can you be sure that they turn over the produce correctly and that all that you buy are equally fresh? Aim: To determine a way of distinguishing between old and new potatoes by immersing potato pieces in different concentrations of sucrose solutions. This will enable equivalent concentrations of the two ages of potato to be found and therefore the two types identified. Introduction: Osmosis is a type of diffusion involving water molecules only. Osmosis can occur when there are two solutions separated by a partially permeable membrane which only allows certain molecules through. The solution on one side has a higher water potential (lower solute concentration) than the solution on the other side. This solution is described as the most hypertonic. Because, as in diffusion, water molecules move from areas of low to high solute concentration,...

Get instant access

• Instant, unlimited access to our documents in full
• Swap your work for free access, or pay £4.99
• To see the full version of this document and 151,713 others