Qualification > Sciences
ALL CIE BIOLOGY DOUBTS HERE !!!
Master_Key:
--- Quote from: The Secret on May 09, 2011, 02:48:33 pm ---Okay, thanks! :)
Can you please give me a draft answer [like what points should be mentioned] for answer 1b in June 2001? The MS is not available online! :s
--- End quote ---
Which paper exactly?
**RoRo**:
--- Quote from: Master_Key on May 09, 2011, 02:54:00 pm ---Which paper exactly?
--- End quote ---
Paper 3 - the practical one!
$H00t!N& $t@r:
can someone please explain how to work out q 2a(ii) in O/N 2008 31
Aadeez || Zafar:
--- Quote from: $H00t!N& $t@r on May 09, 2011, 05:46:15 pm ---can someone please explain how to work out q 2a(ii) in O/N 2008 31
--- End quote ---
it's simple
the eyepiece gratiule is not callibrated but is jus marked with equal gaps
but the stage micrometer is callibrated according to the magnifiaction,
in the first blank write the number of eyepiece graticule units and the ans would be near 8.0
then for the 2nd and 3rd blank look at fig 2.3, look at the fifth division from zero on the figure circle and the 4.5 in the smaller scale, they both exactly superimpose
and so
as the fig say that Each division on the stage micrometer
scale is 0.1 mm so te size of one unit on eye piece grativule would be 4.5/5 *0.1mm
you have lumen of eightof 8 unit of eyepiece graticule unit so multiple egiht with 4.5/5*0.1
u get ur ans in mm
NidZ- Hero:
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)
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