Physics, Chemistry and Biology: Post your doubts here!

[sma786]

i'm so scared for chemistry paper 1 ..
what if the paper is xtremely difficult thats y they gave us 12 days

 

[Love Islam]

Anyone who can help me out.. actually I need compiled past papers for Igcse Biology (0610), Physics(0625), Chemistry (0620), Maths (0580), ICT (0417) ( CHAPTER WISE).

 

[areebaization]

i'm so scared for chemistry paper 1 ..
what if the paper is xtremely difficult thats y they gave us 12 days

they probably will make it easy but we should be prepared for the worst :/

 

[NIM]

Maintain temperature (Homeostasis)
transport substances such as nutrients, oxygen..
protect against dieseases (lymphocytes & Phagocytes)

thnx!!!

 

[NIM]

What percentage of the gas in the balloon is carbon dioxide if u blow in?

 

[NIM]

Which organ produces urea?

 

[thats_me]

Which organ produces urea?

liver

 

[NIM]

liver

ok

 

[NIM]

http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Biology (0610)/0610_s10_qp_12.pdf
question 30

 

[thats_me]

http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Biology (0610)/0610_s10_qp_12.pdf
question 30

It will be D , When animals respire they give out CO2

 

[MERIHAN]

nope!

sry for late reply !! do you want the description of these phase s??????

 

[IGCSE O/L student]

sry for late reply !! do you want the description of these phase s??????

i wanted to know which parts of the growth curve had the following stages. I got it. thanks anyways!

 

[MERIHAN]

I NEED EXPLAINATION !!! CAN ANYONE WXPLAIN ME PLZ ...THANKS IN ADVANCE

 

[IGCSE O/L student]

View attachment 11755 I NEED EXPLAINATION !!! CAN ANYONE WXPLAIN ME PLZ ...THANKS IN ADVANCE

sorry, no idea!

 

[areebaization]

View attachment 11755 I NEED EXPLAINATION !!! CAN ANYONE WXPLAIN ME PLZ ...THANKS IN ADVANCE

air is 20% oxygen approximately
so 20/100 x Q=30cm^3
Q=150

 

[MERIHAN]

air is 20% oxygen approximately
so 20/100 x Q=30cm^3
Q=150

THANX SOOOO MUCH !!!!

 

[Abu mota]

nobody answers my questions
but mayb this time someone might so in oct/nov 2006 i dont understand why is question 8 is C
and also question 27 in oct/nov 2006 dont understand it at all
may/june 2007 question 3 the answer is A and i got it right but i just guessed it rlly
also question 16 in may/june 2007
ty

 

[IGCSE O/L student]

air is 20% oxygen approximately
so 20/100 x Q=30cm^3
Q=150

thanks alot!!!

 

[IGCSE O/L student]

nobody answers my questions
but mayb this time someone might so in oct/nov 2006 i dont understand why is question 8 is C
and also question 27 in oct/nov 2006 dont understand it at all
may/june 2007 question 3 the answer is A and i got it right but i just guessed it rlly
also question 16 in may/june 2007
ty

is this for bio or chem?

 

[Abu mota]

chemistry