This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General physiology, Subject name: Physiology
Skeletal muscle use the 
Select and explain. 
A. GLUT-1 transpoer, B. GLUT-2 transpoer, C. GLUT-3 transpoer, D. GLUT-4 transpoer
D: GLUT-4 transpoer
Answer: D: GLUT-4 transpoer 
Explanation: The entry of glucose into skeletal muscle is increased during exercise in the absence of insulin by causing an insulin-independent increase in the number of GLUT 4 transpoers in muscle cell membranes.(REF.GANONG'S REVIEW OF MEDICAL PHYSIOLOGY 23rd EDITION page no.331)