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for p33 no food test! frm wher did u hear ths, coz i heard food test is cumin!That is like always coming
its better not to waste tym and write only wat they have asked...like only three modifications nd not more than thatIn the paper questions like suggest 3 modifications or list out 2 errors, can we write more than what they ask? like more than 3 modifications or errors.
mee too i heard that it's gonna be therefor p33 no food test! frm wher did u hear ths, coz i heard food test is cumin!
food test for 31ya im kinda of sure food tst is gonna b thr!!
fr 33!food test for 31
so got the information ?i myt gt sum info on ths 2mrw! let ul knw abt it 2mrw!
is there any new thing on the practical exam thats coming for P31 ?RIP everyone in the post ....come back the night before biology paper.... ....
Number of eyepiece graticule units: 8.75-1.50=7.25 EPG units. (You have to measure the width of the lumen.)Can anyone tell me how to do this question? Q2a (ii)
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_w08_qp_32.pdf
Number of eyepiece graticule units: 8.75-1.50=7.25 EPG units. (You have to measure the width of the lumen.)
Now you can see on the second Fig. that 10 units of the stage micrometer are in line with 9 units on the EPG.
You've got all the information you need, now all you need to do is cross multiplication:
7.25 EPG units - x stage micrometer units
9 EPG units - 10 stage micrometer units
9x - 72.5
x - 8.1
1 unit on the stage micrometer - 0.1 mm
8.1 units - x mm
x - 0.1 x 8.1 = 0.81 mm.
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