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Carbohydrate Metabolism

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dariontwitty's version from 2016-07-21 13:28

Section

Question Answer
The rate-limiting enzyme and main control in glycolysisPhosphofructokinases (PFK-1 and PFK-2)
The protein that inhibits PFK-1glucagon
The protein that stimulates PFK-1insulin
The type of reaction in which ADP is directly phosphorylated to ATP using a high-energy intermediatesubstrate-level phosphorylation
The key fermentation enzme lactate dehydrogenase
Irreversible enzymes of glycolysisHexokinases, glucokinase, PFK-1, Pyruvate Kinase
The disaccharide important for a source or galactoselactose
The disaccharide important for a source of fructosesucrose
The rate-limiting enzyme in glycogenesisglycogen synthase
The rate-limiting enzyme of glycogenolysisglycogen phosphorylase
Important substrates for gluconeogenesisglycerol 3-phosphate, lactate, glucogenic amino acids
The rate-limiting enzyme in gluconeogenesisfructose-1,6-biphosphatase
Important enzymes to counteract irreversible steps of glycolysispyruvate carboxylase, phosphophenolpyruvate carboxykinase, fuctose-1,6-biphosphatase, glucose 6-phosphatase
The rate-limiting enzyme for pentose phosphate pathwayglucose-6-phosphate dehydrogenase (G6PD)
This pathway is important in production of NADPH and a source of ribose 5-phosphate for nucleotide synthesispentose phoshpate pathway
The possible fates of pyruvateconversion to acetyl-CoA by PDH, to lactate by lactate dehydrogenase, to oxaloacetate by pyruvate carboxylase
Pyruvate dehydrogenase is inhibited by this moleculeacetyl-CoA
This happens when there is a build-up of acetyl-CoA during B-oxidationpyruvate converted into oxaloacetate for gluconeogenesis
Products of pyruvate dehydrogenase complexAcetyl-CoA, NADH, CO2
Enzymes needed to break down glycogen in glycogenolysisglycogen phosphorylase and debranching enzyme
This molecule is an intermediate of the citric acid cycle and can only leave the mitochondria after being reduced to whatoxaloacetate to malate
Pyruvate carboxylase and phosphoenolpyruvate carboxykinase (PEPCK) replaces which enzyme of glycolysispyruvate kinase
Fructose-2,6-biphospatase replaces which enzyme of glycolysisphosphofructokinase-I ((PFK-1)
Glucose-6-phosphatase replaces which enzyme of glycolysisglucokinase
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