AS bio P32 guesses

[ruler_of_the_world]

but guys does anyone knw how to draw a good dicot stem ?

Refer to w09 31

 

[ruler_of_the_world]

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my teacher didn't say anything about preparing water bath, only hydrogen peroxide and the equipments like in the specimen paper, so he guessed it will be the effect of different concentrations on the number of bubbles

They will set the temperature of the water bath themselves they will provide u with the water if specified or else will b dilutions

 

[menna1234]

They will set the temperature of the water bath themselves they will provide u with the water if specified or else will b dilutions

whether its serial dilution or effect of temperature, it won't really matter, at least we knw about counting the number of bubbles, so then we can prepare ourselves for techniques needed

 

[joanna omar]

I was told that it could probably be counting bubbles by changing temperate of the beaker or by changing concentration of H2O2

I was have heard the same from my school (Y)

 

[Sarah_3420]

who knows how to draw a stem dicot? is there a link or something PLEASEE !

 

[marz_katy]

how do u knw about slides:/ slides comes to school befre sumtym and its impossible to knw dat:/ i jst hope its not animal related

 

[IGCSEstudent2012]

But my teacher told that it is about yeast !!!!!!!

EXACTLYY.....my teacher also told yeast and stem slidee!!!!

 

[IGCSEstudent2012]

yess it includes hydrogen peroxide, my teacher who prepares the lab equipment said so, and the test might be like the one in the specimen where u have to count the number of bubbles per min and see the effect of concentration on the number of bubbles, so most probably there will be serial dilution , and the slide include a dicot stem where u have to draw

yes thats what ive been told by teachers

 

[Sarah_3420]

what yeast experiment might come? :S any links to a past paper that might be similar ? please

 

[joanna omar]

what yeast experiment might come? :S any links to a past paper that might be similar ? please

check N07 exp

 

[IGCSEstudent2012]

what yeast experiment might come? :S any links to a past paper that might be similar ? please

m/j 2009 32

 

[IGCSEstudent2012]

GOOD LUCK EVERYONE!...u'll ace it inshaallah!

 

[menna1234]

Guyss a havee a very important question, in the tables were we had to do, i wrote my results in pencil, but i wrote a report to the CIE asking them not deduct any marks and gave them my reason, do u think ill get deducted?

 

[IGCSEstudent2012]

Guyss a havee a very important question, in the tables were we had to do, i wrote my results in pencil, but i wrote a report to the CIE asking them not deduct any marks and gave them my reason, do u think ill get deducted?

that ques was so weird:/..we had to make lines of how many bubbles formed..i did it with pencil too but wrote the total no. with pen

 

[menna1234]

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that ques was so weird:/..we had to make lines of how many bubbles formed..i did it with pencil too but wrote the total no. with pen

Yes we had to do this, but am on about the table u had to make to insert ur results the one just right before the question of inaccuracy.

 

[IGCSEstudent2012]

h
Yes we had to do this, but am on about the table u had to make to insert ur results the one just right before the question of inaccuracy.

for that we had to show the time and bubbles for hot temp and same for cold temp also

 

[menna1234]

for that we had to show the time and bubbles for hot temp and same for cold temp also

Yes, i wrote the answers in this table in pencil, will they deduct marks?

 

[IGCSEstudent2012]

Yes, i wrote the answers in this table in pencil, will they deduct marks?

i think they will not sure:/...our teachers always told us to write tables with pen

 

[menna1234]

i think they will not sure:/...our teachers always told us to write tables with pen

But i wrote them a report that i didnt have time to go over it with pen, so i hope they wont deduct much

 

[IGCSEstudent2012]

But i wrote them a report that i didnt have time to go over it with pen, so i hope they wont deduct much

yeah good you wrote a report..there is still hope than
any idea about the threshold? :/