Pyruvate kinase catalyzes the transfer of a phosphoryl group from phosphoenolpyruvate to adp in the last step of glycolysis, forming pyruvate in the process. vertebrates have several isozymes of pyruvate kinase, which can be allosterically inhibited by compounds including atp and acetyl-coa. what is an effect of camp-dependent protein kinase (pka) inactivation of the liver isozyme but not the muscle isozyme?
a. phosphate from the dephosphorylation of the liver isozyme is used to generate atp and provide energy for movement.
b. glycolysis is inhibited in the muscle, but not liver, when blood sugar is low.
c. under stress (fight-or-flight) conditions, muscle can use glycolysis to break down glucose.
d. glycogen synthesis is promoted in the liver as an energy store.
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Which of the following contributes to the structural rigidity of cellulose? adjacent glucose polymers are stabilized by hydrogen bonding. glucose residues are joined by (α1→4) linkages. cellulose is a highly branched molecule. the conformation of the glucose polymer is a coiled structure.
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Pyruvate kinase catalyzes the transfer of a phosphoryl group from phosphoenolpyruvate to adp in the...
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