What is the net energetic cost of converting two pyruvate to one glucose by gluconeogenesis in ATP equivalents (Count GTP's as ATP's)?
4
8
2
6
The biotin prosthetic group of pyruvate carboxylase is covalently attached to a ______ residue of the enzyme?
Arginine
Valine
Aspartate
Lysine
The enzyme _____ is the major control point for glycolysis in muscle.
Phosphofructokinase
The enzyme _____forms a Schiff base upon formation of the enzyme-substrate complex allowing aspartate mediated cleavage of the substrate.
phosphoglucose mutase
hexokinase
glucose-6-phosphatase
Aldolase
The products of glycolysis include: ATP, NADH, and ______.
Pyruvate
NADPH used in lipid biosynthesis is produced by the ______ pathway
Pentose Phosphate
Which of the following serves as the free energy source for the metabolic conversion of oxaloacetate to phosphoenolpyruvate, which is catalyzed by PEP carboxykinase?
hydrolysis of ATP
hydrolysis of PPi
hydrolysis of GTP
hydrolysis of an internal phosphoanhydride bond
The enzymes that catalyze glycolysis are located in
endoplasmic reticulum
cytosol.
endoplasmic reticulum
mitochondrial matrix.
Which of the following enzymes catalyzes the transfer of a phosphoryl group from ATP to glucose?
phosphoglucose mutase
glucose-6-phosphatase
Hexokinase
phosphoglucose isomerase
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