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11 April 2006 @ 11:35 am
 
Ok this might be sad but I figure why not help with revision?

Biology first because
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I think photosynthesis will be the topic...

I shall put the first stage and then in comments reply with the next stage ( I know it's very sad...)


Light Dependent Reactions

Energy from light raises an electron to a higher energy level - it becomes an excited electron! The chorophyll is photoactivated.
 
 
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Brynvenkovan on April 11th, 2006 10:59 am (UTC)
So are we replying yeah? Or only you? I hope it us coz photosynthesis is one of my favourite bits.

The electrons are passed to the electron carrier chain, which uses the energy to pump H+ ions into the lumen of the thylakoid membrane. This creates an electrochemical gradient which is harnessed by ATP synthase to produce ATP as the H+ ions flow back through the membrane - photophosphorylation by chemiosmosis.

Sorry...that was quite a long "stage". It's just so hard to know where one stage ends and where one begins in all these processes!

Yay for Biology! (but not the pooey heart...it's pooey)
Tara: Fireflyxuffyt on April 11th, 2006 11:52 am (UTC)
Everyone is replying yes! I thought it could be like a trivia chain...only with biology!

I will leave the next step to someone else - I wouldn't want to take too many goes!