ASK BIOLOGY DOUBTS HERE!!!!

[farhan143]

Hey guys if you have any doubt in Biology just ask me, cuz its my fave and I am an expert
So come on and bring in your doubts.

 

[MohammedNoor]

viewtopic.php?f=24&t=9694

clear my doubt

qp 18

 

[farhan143]

sorry this is removed because i was spamming!!

 

[farhan143]

cmon guys im stillonline any doubts pls feel 4re to ask

 

[narutogirl]

http://www.xtremepapers.me/CIE/Cambridge IGCSE/0610 - Biology/0610_w09_qp_11.pdf

can u explain the answer to question to Q20

 

[randyaloul]

Can u post mark scheme for 2000 and 2001

 

[Keeemoman]

http://www.xtremepapers.me/CIE/Cambridge IGCSE/0610 - Biology/0610_w09_qp_11.pdf

can u explain the answer to question to Q20

Ok girl first of all it is B as in P it moves left since 4% of carbon is formed this is absorbed by sodalime forming 96 % of previous volume, so since volume is lower than outside then more will start be absorbed as result for difference in pressure
For Q it stays same cause volume stays the same because the glass beads doest intefere with the air volume.This makes the pressure in and out the tube same..
Hope I helped!!! :good:
Good luck in your exams

 

[gary221]

could sum1 explain this????

 

[mahmoodeltayieb]

could sum1 explain this????

its B

explanation....all the other 3 answers sound soo wrong lol

 

[gary221]

hahahaha!!!!


just wht i thought!!!

anyway thts wht im gonna do if this ques comes


btw has anyone got the ms for 2002 ppr 1????

 

[CaptainDanger]

Farhan you already are warned regarding this? Your first post! (Edited Now) Do not SHOUT... If you did the next time you may get banned....

 

[narutogirl]

http://www.xtremepapers.me/CIE/Cambridge IGCSE/0610 - Biology/0610_w09_qp_11.pdf

can u explain the answer to question to Q20

Ok girl first of all it is B as in P it moves left since 4% of carbon is formed this is absorbed by sodalime forming 96 % of previous volume, so since volume is lower than outside then more will start be absorbed as result for difference in pressure
For Q it stays same cause volume stays the same because the glass beads doest intefere with the air volume.This makes the pressure in and out the tube same..
Hope I helped!!! :good:
Good luck in your exams

thanks so u mean that the marker is affected by both the outside and the inside air pressure ?

oh i have another question in
http://www.xtremepapers.me/CIE/Cambridge IGCSE/0610 - Biology/0610_s09_qp_1.pdf
in Q29...can u explain pleez ^_^

 

[AStarHunter]

guyz, i have a doubt too! sorry, it`s late but q21 and q 22 in this paper ---> http://www.xtremepapers.me/CIE/inde...GCSE/0620 - Chemistry/&file=0620_w06_qp_1.pdf
Mark scheme ---> http://www.xtremepapers.me/CIE/inde...GCSE/0620 - Chemistry/&file=0620_w06_ms_1.pdf

thnx

 

[farhan143]

Answer is: B
This is because it is the requirement of the effective gaseous exchange, it needs to be dissolved
see this image and hope u will understand!

 

[farhan143]

ok sme1 s doubt:



Answer C
because:
with the crossing of these to gametes Pp X Pp
the ratio 1:2:1, ie 1= PP, 2= Pp and 1=pp.
The most probable 1, to be exact

 

[dumbledore.]

15. A
Why is it not C?

 

[Pepita]

please!! i need the biology igcse 3rd edition teachers resource CD rom for the workbook answers it is very urgent!!

 

[DragonBall]

Please give an explanation.