Most missed from exam 2 Flashcards
____ is activated by ADP
isocitrate dehydrogenase
Where is succinate dehydrogenase located
mitochondrial inner membrane
In the citric acid cycle, what reduced cofactors are derived from the oxidation of one molecule of acetyl CoA to two molecules of CO2
3 NADH and 1 QH2`
What enzyme catalyzes a substrate level phosphorylation
succinyl-CoA synthetase
The reaction catalyzed by pyruvate dehydrogenase is
an oxidative decarboxylation
What citric acid cycle enzyme is not used in the glyoxylate cycle
isocitrate dehydrogenase
The mechanism of malate synthase that catalyzes the conversion of glyoxylate and acetyl-CoA to malate would be most similar to which citric acid cycle enzyme
citrate synthase
____ has the most spontaneous hydrolysis
phosphoenolpyruvate
____ contains a high energy bond that is used for a substrate-level phosphorylation in glycolysis
1,3- bisphosphoglycerate
___ is a potent activator of phosphofructokinase in mammals
fructose-2,6-bisphosphate
Fructose-2,6-bisphosphate is an activator of ___ and an inhibitor of _____
phosphofructokinase
fructose bisphosphatase
what would occur if both phosphofructokinase and fructose bisphosphates were active simultaneously
a futile cycle
gluconeogenesis is most active in the
liver
What enzyme is not required for the synthesis of branched glycogen
glycogen phosphorylase
The correct order of intermediates during the synthesis of glycogen
glucose
glucose-6-phosphate
glucose-1-phosphate
UDP-glucose
glycogen
What alcohols are esterified to the phosphate group of glycerophospholipids
glycerol
choline
serine
ethanolamine
What are the characteristics of most unsaturated fatty acids found within a human cell
deprotonated carboxylic acid and cis bonds
What two molecules are used in the synthesis of sphingosine
palmitic acid and serine
What factors contributes to the highly exergonic nature of ATP hydrolysis
decrease in negative-ion repulsion in ATP
Glycosaminoglycans are found in
extracellular space
Which disaccharide has both anomeric carbons involved in the glycosidic bond
sucrose
