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    Hello TSR,

    I did a biology practical on friday investigating the water potential of potato. We were then asked to do an evaluation over the weekend and i have compledted all of the questions except for the last one...

    Ok... we basically cut potato tubes out (6) and placed them into different molar (sugar) solutions. We then left them for an hour and recorded the results. Before we left them we placed bungs in th test tubes.

    Why were bungs placed in the tubes?? Any help would be appreciated!!

    Thanks in advance!!
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    I did the same experiment as you last year except we didn't put no 'bungs' in the tubes. I don't even know what that is?
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    its like a cork on top of a wine bottle.... but its a bung (like a cork) on top of a test tube
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    (Original post by apo1324)
    its like a cork on top of a wine bottle.... but its a bung (like a cork) on top of a test tube
    the bung was to prevent sucrose solution from evaporating (as he was leaving it for an hour or so, we left it overnight, I think?).

    And the answer to the prac is just simple osmosis. You are given concentration of sucrose, use this to find water potential using the link between concentration and water potential and apply the laws of osmosis ---> water moves from high water potential to low water potential.
 
 
 
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