Physics, Chemistry and Biology: Post your doubts here!

[stayawayfromhere]

what do we have to know about negative feedback and hormones in food production ? and what do we have to know about behavior ? only taxis right ? or also the definition of it ?

 

[Maz]

How is the fungus adapted to obtain it's food? [3 marks]

 

[humanlaser]

Hiiii
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Chemistry (0620)/0620_s04_qp_3.pdf
7 b ii
how is it 0.1???

HELPPP PLEASE !!!

 

[always-smile :)]

How is the fungus adapted to obtain it's food? [3 marks]

the hyphea produce enzymes which digest food outside it and then it absorb it inside

 

[Maz]

the hyphea produce enzymes which digest food outside it and then it absorb it inside

Is that all we gotta say for 3 marks?

 

[always-smile :)]

Is that all we gotta say for 3 marks?

there is nothing else to say this is the only info provided about this point in our syllabus

 

[sumangupta]

HELPPP PLEASE !!!

ratio=> ethanoic acid : hydrogen gas= 2:1
therefore, 0.02 moles of ethanoic acid gives (0.02/2)= 0.01 moles of hydrogen gas

 

[sma786]

http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Physics (0625)/0625_s11_qp_31.pdf

Question 3, (b iii) ..

 

[humanlaser]

ratio=> ethanoic acid : hydrogen gas= 2:1
therefore, 0.02 moles of ethanoic acid gives (0.02/2)= 0.01 moles of hydrogen gas

Oh yeah ,, thank you .. i 've done it using number of moles in mg thats why i got a wrong answer ,,

 

[sumangupta]

the hyphea produce enzymes which digest food outside it and then it absorb it inside

lemme add further.....
-The rhizoids penetrates into d substratum nd secretes digestive enzymes in order to break down nutrients nd absorb them.
-Branched hyphae to increase the surface area in order to spread over the food substance.

HOPE THIS HELPS...

 

[always-smile :)]

lemme add further.....
-The rhizoids penetrates into d substratum nd secretes digestive enzymes in order to break down nutrients nd absorb them.
-Branched hyphae to increase the surface area in order to spread over the food substance.

HOPE THIS HELPS...

heeey r we talking about parasitic or saprophytic fungi ???

 

[sumangupta]

heeey r we talking about parasitic or saprophytic fungi ???

just simple fungus..

 

[sumangupta]

heeey r we talking about parasitic or saprophytic fungi ???

u're done with studyin?

 

[always-smile :)]

u're done with studyin?

not yet still the reproduction the nervous system :S

 

[ZainH]

ohh y

Dunno.. got another link? Or could you type it if it's short? :s

 

[sma786]

Dunno.. got another link? Or could you type it if it's short? :s

its l0ng anyways forget it, i figured the answer =]

 

[sumangupta]

not yet still the reproduction the nervous system :S

gud luck..!!

 

[always-smile :)]

gud luck..!!

thnx
do i have to solve past papers >??? i solved them all before from yer 2000 to 2011 all variants

 

[Yousif Mukkhtar]

Guys got a slight question here. Should our answers for long and structured questions include all the points from the mark scheme?

 

[afshinsalim]

Guys got a slight question here. Should our answers for long and structured questions include all the points from the mark scheme?

It has 2 have the important points that can give you marks. the answers on the mark scheme is all the possible points that cud giuv u marks.