CHEM AND BIO HELP AND TIPS HERE

[Raywin]

do we hve 2 study only the core portion 4 chem p1

Anything can come so i wouldnt take the chance if i were u..

[Baladya]

Stupid school! I'm totally cluless with the Reproduction lesson... We told them we want practicals but they didnt agree -.-   

[thenewkid™]

Anything can come so i wouldnt take the chance if i were u..

but ppl who tk core also give p1

[Baladya]

but ppl who tk core also give p1

dude, m extended and i get lots of mistakes in P1,,, so my guess is u have to know everything. Just study it man

[Raywin]

but ppl who tk core also give p1

Ohh... well im not sure but if ur doing extended then study everything, if ur doing core then im not really sure.. :S

[**1194**]

There's this question I can't solve :

Factor that limits photosynthesis when stomata are closed.

The mark scheme says CO2 ...But I don't get it...shouldn't it be light ?

[thenewkid™]

Ohh... well im not sure but if ur doing extended then study everything, if ur doing core then im not really sure.. :S

im extended
Thanks

[Vin]

but ppl who tk core also give p1

dude why dont u jus do everything .. that will be a good revision for u  

[dodi23]

Stupid school! I'm totally cluless with the Reproduction lesson... We told them we want practicals but they didnt agree -.-   

loooool....they'll never let u do practical!!!!

[Raywin]

There's this question I can't solve :

Factor that limits photosynthesis when stomata are closed.

The mark scheme says CO2 ...But I don't get it...shouldn't it be light ?

No, light is obtained by chloroplasts present on the leaf. CO2 is obtained through the stomata...

[Vin]

There's this question I can't solve :

Factor that limits photosynthesis when stomata are closed.

The mark scheme says CO2 ...But I don't get it...shouldn't it be light ?

Ok when the stomata are closed it is impossible for CO2 to reach the leaves for photosynthesis .. so the process "limits" due to CO2

On a cloudy day there is not enough light so no energy to carry out photosynthesis so light "limits" the process

[Baladya]

loooool....they'll never let u do practical!!!!

Its okay   I will do my own experiments in my basement xD    

[dodi23]

dont 4get the video camera!!!!!

[jellybeans]

Hi, sooo..

Water is added to a test-tube containing dilute sulphuric acid of pH 4.
What could be the pH of the resulting solution?

A) 8
B) 6
C) 4
D) 2

i thought the concentration of the acid doesn't change the pH? :/

[Baladya]

dont 4get the video camera!!!!!

I would like to help students around the world but i think i m gonna keep it to myself this time