This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
Which of the following glucose transpoer mediates insulin stimulated glucose uptake? 
Select and explain. 
A. SGLT-1, B. GLUT-1, C. GLUT-2, D. GLUT 4
D: GLUT 4
Answer: D: GLUT 4 
Explanation: Insulin stimulated glucose uptake into fat and muscle cells is mediated by GLUT 4. Insulin stimulates translocation of a pool of GLUT 4 to the plasma membrane through targeted exocytosis and depress the rate of GLUT4 endocytosis.