This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Glucose Transpo, Subject name: Biochemistry
After an overnight fasting , GLUTs are reduced in: 
Select and explain. 
A. Brain, B. RBC, C. Kidney, D. Adipose tissues
D: Adipose tissues
Answer: D: Adipose tissues 
Explanation: Option d : After an overnight fasting , GLUTs are reduced in ADIPOSE TISSUES Insulin stimulated GLUTs channels (GLUT-4) opens during the fed state in Skeletal muscles, Cardiac muscles Adipose tissues. So, after an overnight fast, GLUTs are reduced in skeletal muscles, cardiac muscles & adipose tissues due to low insulin. GLUTs channels (GLUT-1 and 3) open during fasting in Brain, RBC, Kidney & Placenta.