Physics, Chemistry and Biology: Post your doubts here!

[Lost_Life]

lol i guess there's sumthin wrong with my eyes :O
May be its the printing prob or sumthin
X is a little further than Y so X is retina & Y is choroid

you too???! SAME QUESTION xD

 

[thats_me]

you too???! SAME QUESTION xD

which one?

 

[Lost_Life]

which one?

The eye , retina and choroid :c

 

[thats_me]

The eye , retina and choroid :c

lol

 

[Lost_Life]

lol

yeah, its so misleading, X and Y are badly drawn.

 

[Abu mota]

lol i guess there's sumthin wrong with my eyes :O
May be its the printing prob or sumthin
X is a little further than Y so X is retina & Y is choroid

ty and srry to bother you again but Q.29 may/june 2001, i have no idea how to do it :/

 

[thats_me]

ty and srry to bother you again but Q.29 may/june 2001, i have no idea how to do it :/

Oh no not a prob
okaye so all of the grand parents are Normal as the symbols represent
their offspring are 3:1 i.e 75% normal
wen the ones with defect are crossed , their offspring are also with defect
Now, if two heterozygous normal are crossed (Nn X Nn) the offspring ratio will be 3:1
This means both the grand parents are heterozygous i.e each carries one recessive allele so B

 

[Yousif Mukkhtar]

Can some one explain, q 34:
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Biology (0610)/0610_w10_qp_11.pdf

 

[Maz]

Can some one explain, q 34:
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Biology (0610)/0610_w10_qp_11.pdf

The answer's D.
Almost all of the energy is lost by the fourth or fifth trophic level.
The other options aren't related to energy.

 

[thats_me]

Can some one explain, q 34:
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Biology (0610)/0610_w10_qp_11.pdf

Well here B & C make no sense
The loss of energy is not just due to respiration so it's D As by 4th trophic level most of the enrgy will be lost..

 

[thats_me]

ty and srry to bother you again but Q.29 may/june 2001, i have no idea how to do it :/

i think u were right it was A in the respiration question
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Biology (0610)/0610_w09_qp_11.pdf check question 18 the ans is A

 

[FATIMAH]

THHHHHHHHHAAAAAAAAAAAAAAAAAANNNNNNNNNNNNNNNNNKKKKKKKKKKKKK UUUUUUUUUUUUU BOTTTHHHH SOOOOOOOOOOOOO MUCCCCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH REALLY APPRECIATE UR EFFORT

ma pleasure

 

[Rahma Abdelrahman]

Help needed....
J 94 Q37, is it A or B..?
and Q 40, is it C??
Please someone answer me, time is running and the exam is approaching too quickly!!!

 

[IGCSE O/L student]

Help needed....
J 94 Q37, is it A or B..?
and Q 40, is it C??
Please someone answer me, time is running and the exam is approaching too quickly!!!

is this bio or chem?

 

[Yousif Mukkhtar]

Lol, can anyone explain to me Potato tuber formation?

 

[IGCSE O/L student]

Lol, can anyone explain to me Potato tuber formation?

ummm...idk!

 

[Audi]

i have an english book and i don't know what is it use , is it useful? and how to study it?

 

[ahmed soliman]

O/N 1994 28 ? WHY NOT C?
M/J 1996 36? WHY NOT B?
ANYONE PLZ ANSWER ASAP

 

[Maz]

Help needed....
J 94 Q37, is it A or B..?
and Q 40, is it C??
Please someone answer me, time is running and the exam is approaching too quickly!!!

37 is A and 40 is C.

 

[Maz]

i have an english book and i don't know what is it use , is it useful? and how to study it?

This thread is for physics, chem,bio.
Anyways, English mainly depends on practice and reading. Although, most probably, the textook might help you for knowing the format of essays ,etc.