D Part 2 Flashcards
What are the roles of alternative oxidase (AOX) in the mammalia?
To ‘roboot’ an overly reduced quinone pool by oxidising it back to quinone from quinoa AND to generate heat during (hibernation)
Which vitamin of B complex is coenzyme A derived from?
Panothenate
What is the correct order of the intermediates of ‘Krebs cycle’?
Acetyl-CoA, citrate, cis-aconitate, isocitrate, 2-oxoglutarate, succinyl-CoA, succinate, fumarate, malate, oxaloacetate
What is the function of a carboxysome?
To elevate the pCO2 around RuBisCO and exclude O2
What is plastocyanin?
A blue copper protein that carries electrons from b6f complex to PSI
What is the net reaction of Krebs cycle in the eukarya ?
Acetyl-CoA- ->2CO2 + GTP + 3NADH + QH2
Photosystem I contains..
P700 reaction centre based on Chl a-Chl a dimer plus Chl a , Chl b , phylloquinone and carotenoids
How many electrons can ubiquinone-10 and cytochrome c carry?
2 on ubiquinone-10 and 1 on cytochrome c
Which respiratory quinone is used in all eukarya?
Ubiquinone-10
Chlorobi….
Assimilate CO2 using the arnon-Buchanan cycle and use H2S as their electron donor
What are the coupling sites in the respiratory chain of the mitochondria of eukarya?
NADH dehydrogenase, the bc1 complex and the cytochrome c oxidase
What is the path of electron flow from NADH in the standard respiratory chain of mitochondria in the eukarya?
NADH - - >NADH dehydrogenase- - > quinone pool - -.bc1 complex - - > cyt c - ->aa3oxidase- ->O2
Where are respirator quinones located in the mitochondrion?
Dissolved in the inner mitochondrial membrane
What does fluorocitrate do?
Permanently inhibits aconitate hydratase
Which intermediate of Krebs cycle is used in anabolism to make Purine bases?
2-oxoglutarate
The link reaction is which reaction?
Pyruvate+ CoA+NAD+- -> acetyl-CoA+NADH+CO2
What inhibits the Fo sector of the ATP synthase?
Oligomycin
In an experiment, a suspension of mitochondria obtained from liver are incubated with NADH and the production of ATP is monitored. On adding the substance 2,4-dinitrophenol, ATP production stopped. What is the 2,4-dinitrophenol doing?
Uncoupling the proton gradient by trafficking protons back across the membrane into the matrix
In non-cyclic photophosphorylation in the viridiplantae, how many hydrogen Ions end up in the thylakoid lumen from the process as a whole for each molecular oxygen formed during the process?
8
