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Lets go for it .... All the plantt stuff we've done... Light dependant/dependant reactions :)
Matty is COOL. ....LOL
Right! Light DEpendant!
Takes place in thylakoid membrane (Y)
When a photon of light hits photo system II, the electrons get EXCITED (hahaha) or "move to a higher energy level" - Banisha '09.
The electrons then travel down the Electron Transport Chain, losing energy as they do. This generates....drumroll ATP!!!!
o0o0o and Photolysis takes place to replace the lost electrons! This process gives off O2 as waste, WIN FOR HUMANS!
Well enough from me, somebody else can man up and do it. lol
Erm.... Lovely... Thanks Lauren I'll have Mr Celvin Melvin :D
Carbon dioxide binds with ribulose bisphsospate (5 carbon).
This reaction is catalysed by rubisco.
This forms two lots 3-phosphoglycerate, by splitting into 2 smaller molecules it means that these products are more immediate and avaliable for a reaction.
3-phosphoglycerate then undergoes a reduction to make triose phosphate.
This includes the addtion of NADPHred which forms NADPH
It also includes the formation of ATP from ADP+Pi
TP is a 5-carbon molecule, 1-carbon from every cycle contributes to the production of a hexose sugar or other organic substances.
As for the rest of the TP this gets rejuvenated into RuBp.
This includes the addtion of NADPHred which forms NADPH <------ wunt that jus be NADPH to form NADP because im sure NADPHred isnt like real and its jus NADPH or NADPred
... I did that mistake on purpose :P
sure u did
I'll go back to light DEpendent... so starting from where Lauren finished...
Right when the electrons move along the transport chain they lost energy.. this energy is used to transport H+ into urrmm argghhh WHATS IT CALLED!!!!! urrrm THYLAKOID! so that then has a higher conc. of H+ than urm blaah the stroma.. this forms a proton gradient across the membrane..
H+ move down the gradient in the stroma via ATP synthase.. the energy from this movment makes ATP
Right going back to the start... where the electrons move to PS1.. light energy is absorbed by electrons.. making them excited.. la la la...higher energy level and all that stuff.. la la electrons are transfered to NADP along with H+ to form NADPH
and i think thats done now..
1 question for Lauren.. my favourite question :P
Whats ATP and NADPH actually used for in the Calvin cycle? :P
banisha you nerd with the question
:D go on rob have a crack at it
NADP is used to fasilitate the reduction(?) reaction bewteen G3P to TP this is done by suplying the extra protons needed.
ATP is used to supply energy and to proved an extra phosphate to ribulose monophosphate for it to be able to turn back to ribulose bisphosphate i think
im sure ive missed some thing out tho
Hmmm.... NADP(red) This is a co-enzme... Erm.. used to take protons from Calvin Melvin to the light dependant reaction to provide the proton gradient and an electochemical gradient to enable ATP sythesase to occur... Chemiosmosis is the process.
Rob... think you meant NADPH allows G3P to be reduced to TP, and thats why it goes to NADP because thats been oxidised... well done :)
same **** lol i jus wanted to see if matty saw the mistake cos he put one in purpose for me aparently so i was returning the favour but he dint get it but you did well done!!!! you won the game!
LOL wow you guys are beyond cool :D
Ok.. yes that is right, but the initial principle is to complete the cycle... NAPH is used for photophosphorolation in the light dependant reaction... Otherwise we wont be able to get to Calvin?
I drew myself a lovely spazzed-down diagram of this yesterday. It's great :D lol.
I made some revision notes :) x
int ther sum **** also where some electrons or sumat like that go to a higher energy level n then sum stuff happens n nadph is made n then the electrons go to a higher energy level again n atp is made because ov atp synthesaze or sum baba cos i dunno that bit . D: HEEEEELLLLPPPPP IF IM WRONG!!!!!!!!!!!!!!!
Lol Keeno Robb! 02.08 A.M !!! :P
Erm... Photophosphorolation.... Water molecules are split to give electrons, Hydrogen ions disassociate from NADP+... The electons will go through a number of electron carriers... This allows Hydrogen ions to travel across a membrane. This is because of the concentration gradient of Hydrogen ions... Higher conc. to lower conc. These hydrogen ions then drive ATP sythesase by releasing energy as they go back down the gradient. This energy is used to bind ADP+Pi= ATP :D ... Now the ATP will go into use in drving the Calvin cycle and so will the NADP which is recycled back into Calvin to make NADP+ again. :D
Hope That made sense Robb! Please correct me if I'm wrong :)
cheers :) n i was ill n couldnt sleep man so shhhhh