This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Basics of carbohydrate metabolism, Subject name: Biochemistry
Oxidative phase of HMP shunt pathway is least active in 
Select and explain. 
A. Adrenal coex, B. Lactating mammary gland, C. RBC, D. Skeletal muscle
D: Skeletal muscle
Answer: D: Skeletal muscle 
Explanation: Oxidative phase of HMP shunt pathway is least active in skeletal muscle High activity of HMP shunt Low activity of HMP shunt Liver Non-lactating mammary gland Adipose tissue Skeletal muscle Adrenal coex, Thyroid Erythrocytes Testis Lactating mammary gland NOTE: Oxidative phase of HMP shunt cannot occur in kidneys.