Wednesday, May 11, 2005
Revision:
AHHHH!!!! My head is going to explode with all this knowledge I'm trying to cram into it. I must offload somewhere:
Note - this entire post is from memory. Help me if I'm wrong. Maria?
Citric Acid Cycle: AKA Krebs Cycle
Organic compounds are in black.
Enzymes are in green
Oxaloacetate + Acetyl CoEnzyme A ---> Citrate ---> Aconitase ---> Isocitrate ---> Isocitrate Dehydrogenase ---> Oxalosuccinate ---> Alpha Ketoglutarate ---> Alpha Ketoglutarate Dehydrogenase ---> Succinyl CoEnzymeA ---> Succinyl CoEnzymeA Synthetase ---> Succinate ---> Succinate Dehydrogenase ---> Fumarate ---> Fumarase ---> Malate ---> Malate Dehydrogenase ---> Oxaloacetate which is the first compound.
Hence, this should actually be a circle, not linear.
Got that one remembered?
You'll also have to remember that at reaction 4, 6 and 10 NAD+ is reduced to NADH. At 7, GDP is phosphorylated to GTP and at 8 FAD is reduced to FADH2.
And I've got to remember around 10 pathways like that one.
I need to off load another!
Oxidative Steps in the Pentose Pathway
Glucose-6-Phophate ---> Glucose-6-Phosphate Dehydrogenase---> 6-Phosphate-Gluconolactone ---> Gluconolactonase ---> 6-Phospho-Glucanate ---> 6-Phospho-Glucanate Dehydrogenase ---> Ribulose-5-Phosphate ---> Phosphopentose Isomerase ---> Ribose-5-Phosphate (key in making DNA)
You'll also have to remember that NAD+ is again reduced to NADH in reactions 1 and 3.
:( :( :(
Uni is hard.
I still need to do Oxidative Phosphorylation - the Electron Transpost Chain. Lipid Metabolism. Protein Metabolism and Urea Synthesis.
All have at least 1 pathway to learn. And this is only for 1 exam!!!!!
DH is on later though :D
Note - this entire post is from memory. Help me if I'm wrong. Maria?
Citric Acid Cycle: AKA Krebs Cycle
Organic compounds are in black.
Enzymes are in green
Oxaloacetate + Acetyl CoEnzyme A ---> Citrate ---> Aconitase ---> Isocitrate ---> Isocitrate Dehydrogenase ---> Oxalosuccinate ---> Alpha Ketoglutarate ---> Alpha Ketoglutarate Dehydrogenase ---> Succinyl CoEnzymeA ---> Succinyl CoEnzymeA Synthetase ---> Succinate ---> Succinate Dehydrogenase ---> Fumarate ---> Fumarase ---> Malate ---> Malate Dehydrogenase ---> Oxaloacetate which is the first compound.
Hence, this should actually be a circle, not linear.
Got that one remembered?
You'll also have to remember that at reaction 4, 6 and 10 NAD+ is reduced to NADH. At 7, GDP is phosphorylated to GTP and at 8 FAD is reduced to FADH2.
And I've got to remember around 10 pathways like that one.
I need to off load another!
Oxidative Steps in the Pentose Pathway
Glucose-6-Phophate ---> Glucose-6-Phosphate Dehydrogenase---> 6-Phosphate-Gluconolactone ---> Gluconolactonase ---> 6-Phospho-Glucanate ---> 6-Phospho-Glucanate Dehydrogenase ---> Ribulose-5-Phosphate ---> Phosphopentose Isomerase ---> Ribose-5-Phosphate (key in making DNA)
You'll also have to remember that NAD+ is again reduced to NADH in reactions 1 and 3.
:( :( :(
Uni is hard.
I still need to do Oxidative Phosphorylation - the Electron Transpost Chain. Lipid Metabolism. Protein Metabolism and Urea Synthesis.
All have at least 1 pathway to learn. And this is only for 1 exam!!!!!
DH is on later though :D
# posted by TommyDB @ 9:08 p.m. 
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Nagh! *that's* why I didn't do biology..praise Jesus! All I had to do was remember Software Engineering cycles, a few computing terms and how computers work. And some degree-level maths (Linear Algebra; 3D Transformations and Matrices)...*grin*
Maria: Hope springs eternal..we always think we won't have to do what we've done before...but the next step always involves knowing the step before *like the back of your hand* and *then* doing harder stuff. Sorry to burt your bubble...more education will be harder :-S
Maria: Hope springs eternal..we always think we won't have to do what we've done before...but the next step always involves knowing the step before *like the back of your hand* and *then* doing harder stuff. Sorry to burt your bubble...more education will be harder :-S
I remember krebs cycle from last year. Tho never did remember it all, it's about human biology where u just have to know that we have organs and if it's possible to fix them heehee. Well maybe a little more depth needed. :S maybe i should do some revision actually, exam on saturday argh!
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