Question 3 (1 point) Which of the following is/are true about glucose transport

Question

Question 3 (1 point) Which of the following is/are true about glucose transport across the membrane? (Select ALL that are TRUE.) a) The role of the Na+ - K+ ATPase is to keep the levels of Nat high in the cell by pumping Na into the cell from the extracellular environment. b) Glucose from your digested food within the lumen of your intestine is absorbed at the basal surface of the cells in your intestinal epithelium through passive diffusion. c) Movement of glucose out of the basal surface of the intestinal cell occurs via passive transport to an area of lower glucose concentration. d) The concentration of glucose in the cytoplasm of the intestinal epithelial cell is higher than the concentration of glucose in the intestinal lumen or in the extracellular fluid outside the basal domain e) Any movement of molecules that occurs through proteins present in the bilayer is a form of active transport.

Explanation / Answer

Answer: Options C and D are correct.

Explanation:

Glucose is absorbed by active transport mechanism from the lumen of the intestine into the villi. So, option B is incorrect.

Carrier-mediated transport can be passive. Ex: Facilitated diffusion. So, option E is incorrect.

Na+-K+ ATPase pumps out Na+ ions into the extracellular environment.So, option A is wrong.

Movement of glucose within a cell occurs via passive diffusion.

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