Which of the following enzyme is absent in muscle ?: (A) Glucose-1-phosphatase, (B) Glucose-6-phosphatase, (C) Glycogen phosphorylase, (D) Thiophorase
Answer is B. 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