Both the liver and muscle contain glycogen, yet, unlike liver, muscle is not capable of contributing glucose to the circulation because muscle:
Ans. A. Does not have the enzyme glucose-6-phosphataseThe liver has the enzyme glucose-6- phosphatase, but muscle does not. Consequently, muscle is incapable of releasing glucose from glucose 6- phosphate. Glucose undergoes reactions other than glycolysis. Both liver and muscle have glucose-1- phosphatase and glycogen phosphorylase enzymes. The synthesis of glucose, called gluconeogenesis, is carried out mostly in the liver and, to some extent, in the kidneys.
Does not have the enzyme glucose-6-phosphatase
Glycolytic activity consumes all of the glucose it generates
Does not have the enzyme glucose-1-phosphatase
Does not have the enzyme glycogen phosphorylase
Misc.