An Inane Post
Time for a short siesta from Terms. (A.k.a. a little inane blogging.)
Although goodness knows I've slacked off enough for today. But muahaha.
GP, Lit, Econs and Chem are over! Yeah! Tomorrow's Bio. Argh. I've slacked for too long. Need to pick up speed again!
Hmm. My GP seat number was A5, Lit was H44, Econs was F1 (hahaha) and Chem today was 41D. I wonder what number I'll get tomorrow? Probably around Row 40 to 44.
Oh, speaking of F1, Eater's face when I told her my seat number was hilarious. But you know Eater, I didn't realize it's significance until I saw your face. So whose doing is it anyway?
Hmm. People seem to think Hamilton will win this year. But the odds at Singapore Pools are looking better for Raikkonen.
Ahhh, I don't want Hamilton to win! Rargh! >.< I think he talks too much.
I want Kimi to win! I think he deserves to win more than Hamilton, that upstart. Then he'll have two driver's championships to his name. Like Mika Hakkinen :D But if, no WHEN, he wins again I'll still think Mika is the best. Mika-sama wa sugoi desu! Ichiban desu~!
Oh yes, the newspaper called Kovalainen "inexperienced". It was shortly after they called Kimi a "Flying Finn". Aww. Such stark contrast. That has to hurt. Ah well, the mass media never changes.
Tonikaku, ganbatteru, Raikkonen-sama!
Huhh. I need to be studying photosynthesis, but it's not getting into my head >.<
Let's try typing some of it out here.
Eh-hem.
Mechanism of light dependent stage of photosynthesis:
1. Light energy comes in discrete packets called quanta/photons.
2. Chlorophyll absorbs the light and energy is transferred to an electron in the chlorophyll molecule.
3. The electron is then raised to an unstable energized state and leaves the chlorophyll molecule.
4. This excited electron (whee) migrates from one molecule to another until the extra energy is dissipated and this energy released is utilized for the synthesis of ATP in the chloroplast.
5. Only 2 forms of chlorophyll a can be oxidized- P700 and P680. They are primary pigments/reaction centres.
6. At the reaction centres, the excited electron is then passed to an acceptor molecule and enters into a series of redox reactions which are coupled to the synthesis of chemical energy in the form of ATP. This process is called PHOTOPHOSPHORYLATION.
Hmm. Ok I think something got in to my head. This seems to be effective.
Basically, light energy excites electron, electron whees its way to reaction centre, gets passed to acceptor molecule at ETC and causes generation of proton reservoir leading to chemiosmotic synthesis of ATP: PHOTOPHOSPHORYLATION.
Hai! That's covered now.
Next.
Forms of Photophosphorylation
1. Cyclic photophosphorylation- Photosystem 1/P700,
2. Non-cyclic photophosphorylation- Photosystem 2/P700 and P680
1. The same steps as mentioned in the above section take place. After the redox reactions, the electron returns to ground state and returns to the chlorophyll a molecule P700. As such, only ATP is synthesized and this takes place in conditions of low levels of NADP and CO2.
Now for the more complicated one.
2. Once again, the same steps as mentioned in the above section take place, except that the electron from PS I does not go through the ETC. Instead,
a) The energized electron from PS I is accepted by electron acceptor then passed to ferredoxin and then to NADP each molecule of which retains 2 electrons.
b) With the 2 extra electrons, NADP attracts 2 protons to give NADPH+H+.
c) To fill the electron gap in P700, electrons from P680 are excited and emitted. They pass through the ETC and are coupled to the synthesis of ATP. This in return leaves an electron gap in PS II. (Gee, like duh.)
d) To replace the electrons emitted, water is lysed at PS II to give oxygen gas, protons and electrons.
e) Oxygen: released as gaseous by-product
Protons: pumped into thylakoid space, associated with NADP
Electrons: passed around from water to P680 to P700 to NADP.
Hey, I feel I know photosynthesis better now :)
Saaa-tte, I shall stop here.
To anyone who has read until this point, thanks for being so long suffering. However, I did mention that it would get inane ;) at least to anyone not taking a biology term paper tomorrow.
Although goodness knows I've slacked off enough for today. But muahaha.
GP, Lit, Econs and Chem are over! Yeah! Tomorrow's Bio. Argh. I've slacked for too long. Need to pick up speed again!
Hmm. My GP seat number was A5, Lit was H44, Econs was F1 (hahaha) and Chem today was 41D. I wonder what number I'll get tomorrow? Probably around Row 40 to 44.
Oh, speaking of F1, Eater's face when I told her my seat number was hilarious. But you know Eater, I didn't realize it's significance until I saw your face. So whose doing is it anyway?
Hmm. People seem to think Hamilton will win this year. But the odds at Singapore Pools are looking better for Raikkonen.
Ahhh, I don't want Hamilton to win! Rargh! >.< I think he talks too much.
I want Kimi to win! I think he deserves to win more than Hamilton, that upstart. Then he'll have two driver's championships to his name. Like Mika Hakkinen :D But if, no WHEN, he wins again I'll still think Mika is the best. Mika-sama wa sugoi desu! Ichiban desu~!
Oh yes, the newspaper called Kovalainen "inexperienced". It was shortly after they called Kimi a "Flying Finn". Aww. Such stark contrast. That has to hurt. Ah well, the mass media never changes.
Tonikaku, ganbatteru, Raikkonen-sama!
Huhh. I need to be studying photosynthesis, but it's not getting into my head >.<
Let's try typing some of it out here.
Eh-hem.
Mechanism of light dependent stage of photosynthesis:
1. Light energy comes in discrete packets called quanta/photons.
2. Chlorophyll absorbs the light and energy is transferred to an electron in the chlorophyll molecule.
3. The electron is then raised to an unstable energized state and leaves the chlorophyll molecule.
4. This excited electron (whee) migrates from one molecule to another until the extra energy is dissipated and this energy released is utilized for the synthesis of ATP in the chloroplast.
5. Only 2 forms of chlorophyll a can be oxidized- P700 and P680. They are primary pigments/reaction centres.
6. At the reaction centres, the excited electron is then passed to an acceptor molecule and enters into a series of redox reactions which are coupled to the synthesis of chemical energy in the form of ATP. This process is called PHOTOPHOSPHORYLATION.
Hmm. Ok I think something got in to my head. This seems to be effective.
Basically, light energy excites electron, electron whees its way to reaction centre, gets passed to acceptor molecule at ETC and causes generation of proton reservoir leading to chemiosmotic synthesis of ATP: PHOTOPHOSPHORYLATION.
Hai! That's covered now.
Next.
Forms of Photophosphorylation
1. Cyclic photophosphorylation- Photosystem 1/P700,
2. Non-cyclic photophosphorylation- Photosystem 2/P700 and P680
1. The same steps as mentioned in the above section take place. After the redox reactions, the electron returns to ground state and returns to the chlorophyll a molecule P700. As such, only ATP is synthesized and this takes place in conditions of low levels of NADP and CO2.
Now for the more complicated one.
2. Once again, the same steps as mentioned in the above section take place, except that the electron from PS I does not go through the ETC. Instead,
a) The energized electron from PS I is accepted by electron acceptor then passed to ferredoxin and then to NADP each molecule of which retains 2 electrons.
b) With the 2 extra electrons, NADP attracts 2 protons to give NADPH+H+.
c) To fill the electron gap in P700, electrons from P680 are excited and emitted. They pass through the ETC and are coupled to the synthesis of ATP. This in return leaves an electron gap in PS II. (Gee, like duh.)
d) To replace the electrons emitted, water is lysed at PS II to give oxygen gas, protons and electrons.
e) Oxygen: released as gaseous by-product
Protons: pumped into thylakoid space, associated with NADP
Electrons: passed around from water to P680 to P700 to NADP.
Hey, I feel I know photosynthesis better now :)
Saaa-tte, I shall stop here.
To anyone who has read until this point, thanks for being so long suffering. However, I did mention that it would get inane ;) at least to anyone not taking a biology term paper tomorrow.
posted by munchkin @ 5:04 PM
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