Glucose absorption from the gut occurs by:: (A) Simple diffusion, (B) Facilitated diffusion, (C) Primary active transpo, (D) Secondary active transpo
Answer is D. Glucose absorption from the gut occurs as co-transpo (secondary active transpo) with Na+ transpoer is SGLT-1 (sodium-glucose transpoer). SGLT-1 is a sympoer located on the luminal brush border of the enterocytes; it transpos 2 Na+ for every molecule of monosaccharide (glucose/galactose). Glucose moves across the basolateral membrane into the blood by passive transpo or facilitated diffusion GLUT-2 transpoer.