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
GLUT-5 is transpoer for 
Select and explain. 
A. Glucose, B. Fructose, C. Mannose, D. Galactose
B: Fructose
Answer: B: Fructose 
Explanation: GLUT5 is a fructose transpoer expressed on the apical border of enterocytes in the small intestine.GLUT5 allows for fructose to be transpoed from the intestinal lumen into the enterocyte by facilitated diffusion due to fructose&;s high concentration in the intestinal lumen.GLUT5 is also expressed in skeletal muscle, testis, kidney, fat tissue (adipocytes), and brain. Ref: DM Vasudevan, 7th edition, page no: 320