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biochem final
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Question | Answer |
---|---|
3 ways pyruvate is converted | aerobic oxidation-converst into 6CO2 and 6H2O anaerobic homolactic fermentation- 2lactate anaerobic alcholic fermentation- 2CO2, 2ethanol |
how is galactose converted | uses atp to form Glucose 6 phosphat |
fructose pathway to glycolisis | ->ATP->fructose-1-P ->FIP aldolase-> dihydroacetone phosphate or glyceraldehyde->Glyceraldehyde-3-phosphate or Glycerol-3-P(makes TAG) |
pyruvate uses what enzyme with NADH to produce lactate | pyruvate dehydrogenase |
how many ATP can a cell store | 2-5 |
ATP stores a phosphate on ... | phosphocreatine |
pyruvate anaerobic alcohol fermentation pathway | ->pyruvate dehydroxylase(looses CO2)-> acetaldehyde ->alcohol dehydrogenase(uses NADH)-> ethanol |
how are pyruvates transformed into fatty acids | ->coAsh(removal of CO2)-> acetal CoA ->fatty acid(->TAG) |
what is the precurser for the synthesis of amino acids and how is it formed | pyruvate ->CO2+ATP+pyruvate carboxylase-> oxylacitate |
glycogen is stored... | in muscles and the liver |
name three subunits of pyruvate dehydroxylase and 5 coenzymes | e1,e2,e3 TTP, lipoamide, NAD, CoA, FAD |
products of Cytric acid cycle | 2CO2, 3NADH, 1QH2(like nadh but nonpolar to work in membranes), and 1 GTP |
Cs released from cytric are from | not pyruvate |
how much ATP does each cofactor produce when it is reoxidized | NADH=2.5 QH2=1.5 |
what inhibits and activates and where in the cytric acid cycle | Citrate on Citrate Sccinyl-CoA on ketoglutarate and Citrate NADH on Citrate, isocitrate, and ketoglutarate ADP and Ca2+ on isocitrate Ca2+ on ketoglutarate |
at what step is the molecule transported to the cytosol | citrate |
how many proteins do mitochondria make | 13 (vs. 1500) it neeeds |
how does NADH get into the inner matrix | malate dehydrogenase convers oxaloacetate to malate which goes into the matrix then converted back to oxa... then to aspartate which is transported out |
adenine nucleotide translocase | sends ATP out of matrix or ADP in |
NADH ubiquinone reductase | 1st structure in converting H+ to ATP; reduces Q to QH2 46 subunits |
prosthetic groups of e- transport | FMN- like FAD without AMP H atoms get transferred one at a time Iron-sulfer clusters transfers one e- at a time |
how many protons get released in complex 1 | 4 |
how are protons transfered to the cytosol | jumps from water and amino acids and prosthetic groups |
heme b | prosthetic group in III that differs in 3 substituants from heme a in the cytosol |
complex III structure and function and name | ubiquinone cytochrome c oxireductase dimmer of 11 each reoxidizes ubiquinone- 1st round ISP takes one e-,cyto b takes the other. cyto c1 takes from ISP then to cyto c(Fe3+)->Fe2+ 4 protons all together |
how are e- transfered from III to IV | cytochrome c |
structure and name of IV | Cytochrome c oxidase 13 subunits, 28 transmembrane a helices |
IV | uses Cu ions, 2 protons transfer |
proton motive force | PH .75 charge .17 |
structure of ATP synthase | F0= a, 2b, 12-14 c F1= 3alpha, 3beta, 1 g, 1 y, 1E |