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AS Biology 33 2015 M/J

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how was chem 33? i think i'm losing marks in tiration
You know for the enthalpy experiment ... were you meant to take a temperature reading of the initial without any FA3 added and then calculate the difference or just take temp after adding 5cm3 and then the difference between highest and lowest? :S
 
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it will be based upon the turgidity of a slice of a potato after you place it in a dilute solution and then in a concentrated solution, more like dilution .. you will have too make solutions of different concentrations, you 'll have to measure the length of the potato strip or slice after carrying out the experiment with each solution that you will make !! revise this from the o level coarse book ...

which paper are u talking about?? 31 or 33?
 
Messages
275
Reaction score
558
Points
103
You know for the enthalpy experiment ... were you meant to take a temperature reading of the initial without any FA3 added and then calculate the difference or just take temp after adding 5cm3 and then the difference between highest and lowest? :S
we were asked to take the initial before adding FA3 , ie. after adding FA4
 
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lstn, what i know about zone 3 or to b accurate in my school, the questions will be based upon Starch and Benedict's Test and Magnification..
We haven't got anything related to yeast in the ir report
Yeast has always been problematic. You mean that your school is the centre? that's cool.
 
Messages
139
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it will be based upon the turgidity of a slice of a potato after you place it in a dilute solution and then in a concentrated solution, more like dilution .. you will have too make solutions of different concentrations, you 'll have to measure the length of the potato strip or slice after carrying out the experiment with each solution that you will make !! revise this from the o level coarse book ...
Are you sharing guess? You seem quiet sure about it,
 
Messages
139
Reaction score
70
Points
38
lstn, what i know about zone 3 or to b accurate in my school, the questions will be based upon Starch and Benedict's Test and Magnification..
We haven't got anything related to yeast in the ir report
your school is taking 33 variant?
 
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