Essay Zone.com - Free essays!
REGISTER NOW!
Login to an existing account
     
GCSE essays
A Level essays
University essays
Forum
Why join?
Essay quality
FAQ

Search forums
About us
Contact us

 

 
The effect of temperature on membrane permeability in beetroot Free essay! Download now

Home > GCSE > Biology > The effect of temperature on membrane permeability in beetroot

The effect of temperature on membrane permeability in beetroot

You can download this essay for free. All you need to do is register and submit at least one of your essays to us.

Or you can purchase this essay for just $2 instantly without registering

Downloads to date: N/A | Words: 400 | Submitted: 06-Jun-2010
Spelling accuracy: N/A | Number of pages: | Filetype: Word .doc

Description

The effect of temperature on membrane permeability in beetroot

Preview

...
Safety

TAKE CARE WITH CORK BORER AND MOUNTED NEEDLE – MIND YOUR FINGERS
WEAR GOGGLES ONCE BUNSEN IS LIT

1. Use a cork borer to cut cylinders of fresh beetroot tissue. Place on a tile and cut into 42, 3 mm wide discs.
2. Place all the discs in a small beaker and wash under a running tap for at least 5 minutes.
3. Meanwhile, label the test tubes - 30C, 40C, 50C, 60C, 70C, 80C and 100C and use a graduated pipette to add 6 cm3 cold water to each.
4. Prepare a water bath using a large beaker, tripod and gauze and Bunsen burner.
5. Heat gently to 30C and remove the Bunsen burner.
6. Impale 6 beetroot discs on a mounted needle with space between each disc.
7. Place the discs on the needle in the water bath for exactly 1 min. Push off the discs and drop them into the test tube labelled 30C.
8. Heat the water bath gently to 40C and place 6 more discs on to the needle. Place the discs into the water bath for 1 min, then push the discs off and into the test tube labelled 40 C.
9. Repeat the procedure for the other tubes. Leave the discs in the test tubes for at least 20 mins.
10. Shake the tubes, hold to the light and compare the colour of the liquids in each.
11. If possible, use a colorimeter to compare the colours of each liquid.

...

Download this essay in full now!

Just upload at one of your essays to our database and instantly download your selection! Registration takes seconds

Or you can download this essay for $2 immediately without registering


Comments and reviews

Reviews are written by members who have downloaded the essay

No comments yet. If you download the essay you can review it afterwards.