• If you are citizen of an European Union member nation, you may not use this service unless you are at least 16 years old.

  • Work with all your cloud files (Drive, Dropbox, and Slack and Gmail attachments) and documents (Google Docs, Sheets, and Notion) in one place. Try Dokkio (from the makers of PBworks) for free. Now available on the web, Mac, Windows, and as a Chrome extension!


PSOW-4-Investigating SA-V with agar and diffusion

Page history last edited by Jay 10 years, 1 month ago

Practical 4 (SA/V)


Purpose: Determine affect of SA/V ratio on diffusion out of “cells”

Criteria:  DCP (formative )

Length:   1 hour (max)

Date (time): 

Cohort: 2013 exams




Use conductance as ions leach from agar cubes to determine affect of SA/V on movement in/out of "cells"




  • add 12 g powdered agar per Liter of distilled water
  • heat while stirring continuously
  • add 100 g NaCl per Liter and mix
  • heat until agar is clear - not cloudy or until boiling
  • remove from heat and stir for 5 minutes
  • pour into dishes and pans




[developed by students]



Comments (0)

You don't have permission to comment on this page.