This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Biochemistry
GLUT2 receptors 
Select and explain. 
A. Insulin dependent, B. Insulin independent, C. Found in cardiac muscle, D. Found in brain
B: Insulin independent
Answer: B: Insulin independent 
Explanation: GLUT 2 is the transpoer in liver cellsGLUT 2 has to be insulin independent since unless glucose enters beta cells GLUT 2 it won&;t be able to make the ATP required to close the K+ channel which is required to depolarize the membrane for Ca+ channels to open and Ca+ to enter the cell to bring about insulin releaseRef: DM Vasudevan, 7th edition, page no: 108