Qualification > Sciences
ALL CIE BIOLOGY DOUBTS HERE !!!
Amelia:
--- Quote from: Nidzzz on May 09, 2011, 08:39:40 pm ---Explain
What the procedure of serial dilution ?
AASAP
Thanz
http://www.freeexampapers.com/past_papers.php?l=Past_Papers%2FA+Level%2FBiology%2FCIE%2F2009+Jun/
Question 1 (a) (ii)
--- End quote ---
- weigh 20 gm of the given glucose in the balance.
- Pour 50 cm3of warm water in a beaker.
- Add the 20 gm glucose in the beaker.
- Stir the mixture
- Then add more 50cm3, to make it up to 100cm3.
Refer to serial dilution - http://toolboxes.flexiblelearning.net.au/demosites/series3/308/laboratory/studynotes/SNHowToPerfrmSrlDilutn.htm
$H00t!N& $t@r:
Are we meant to keep the solution in water bath when testing for the break down of starch by amylase?
Master_Key:
--- Quote from: $H00t!N& $t@r on May 10, 2011, 11:55:30 am ---Are we meant to keep the solution in water bath when testing for the break down of starch by amylase?
--- End quote ---
Yes if testing at different temperatures.
Vampire-Love4ever:
Biology Paper 5, specimen paper:
Q2. How to measure the curvature???
Vampire-Love4ever:
How to do the Q1 bi and ii?
My answer wasn't matching the one for the marking scheme! :S
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