Biochemistry Muscle glycogen stores can NOT be used to provide glucose into the circulation due to lack of: A Glucose-6-phosphate dehydrogenase B Glutamate dehydrogenase C Glucose-6-phosphatase D Glucokinase 💡 Explanation Muscle glycogen stores can NOT be used to provide glucose into the circulation due to lack of: ✓ Correct Answer: C. Glucose-6-phosphatase