Pyruvate Oxidation & Kreb's Cycle - quiz Flashcards
where does pyruvate oxidation occur
mitochondrial matrix
is the pyruvate likely to move across the mitochondrial membranes by diffusion?
requires transport system due to polarity
What 2 types of reactions occur in pyruvate oxidation?
REDOX and decarboxylation
how many ATP are made/used during this link reaction
0 ATP
1 NADH
what electron carriers are made in this process
NADH
how many acetyl-CoA are produced per glucose molecule
2
Where does krebs cycle take place
mitochondrial matrix
What molecule does acetyl-CoA bond with at the start Kreb’s? how many carbons does it contain
oxaloacetate (4 carbons)
what is the reaction that forms isocitrate from citrate?
isomerization
where did the missing atom go during the conversion of citrate to alpha-ketoglutarate
carbon turned into C02 and was removed during decarboxylation
what is occurring when GTP is used to make ATP
coupled reaction
substrate level phosphorylation of ATP
which of citrate, alpha-ketoglutarate, succinate, or oxaloacetate have the lowest potential energy
oxaloacetate
which of citrate, alpha-ketoglutarate, succinate, or oxaloacetate have the highest potential energy
citrate
what type of reaction occurs when NAD+ turns into NADH
REDOX
why is there more than 1 turn of krebs cycle for every 1 glucose molecule
glucose makes 2 pyruvate and 1 cycle only processes 1 pyruvate
