<prompt> Which of the following enzyme is absent in muscle ?Glucose-1-phosphataseGlucose-6-phosphataseGlycogen phosphorylaseThiophorase  <response>: Skeletal muscle and adipose tissue cannot contribute directly to blood glucose because it does not contain glucose-6-phosphatase.The glucose -1-phosphate is conveed to glucose-6-phosphate by phosphoglucomutase. And only liver but not muscle can utilize glucose-6-phosphate to generate glucose 