Glucose is transpoed in the presence Na+ ions in intestine. This is a type of: (A) Secondary Active transpo, (B) Primary active transpo, (C) Facilitated diffusion, (D) Simple diffusion
Answer is A. The active transpo of Na+ into the ECF by Na+-K+ pump is coupled to the transpo of other substances across the cell membrane against their concentration gradient. The energy for the transpo is not directly derived from ATP hydrolysis. Na+ Cotranspo of glucose is an example(Ref: Diseases. Textbook of medical physiology-Geetha)