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The transport of glucose into some cells requires the presence of an electrochemical gradient of Na + ions. In this circumstance, glucose molecules are carried into the cell by___O facilitated diffusion by an antiporter O facilitated diffusion by a symporter O secondary active transport by an antiporter O secondary active transport by a symporter O ATP hydrolysis by the Na + /K + pump

Sagot :

JunRR

A symporter transports one glucose and two sodium ions from the cavity of the small intestine into the absorptive cells of the villi.

What is antiport secondary active transport?

  • In secondary active transport, the electrochemical potential difference is created by pumping ions in or out of the cell.
  • There is no coupling of ATP. The downhill movement of one solute from high to low concentration to move another molecule along with it is called symport. Symport is one of the form of secondary active transport.
  • The example of symport is the co-transports one glucose molecule into the cell for every two sodium ions it imports into the cell. This symporter is located in the small intestine epithelial cells, trachea, heart, brain, testis.
  • Glucose is a monosaccharide, one of the digestion products of carbohydrates. Glucose is a polar molecule and can not diffuse through the hydrophobic core of the cell membrane of absorptive cells of the small intestine.
  • Since both Na+ and glucose are transported in the same direction, it is a symport. Here, the energy of the ionic concentration gradient of Na+ serves as a source of energy for glucose transport, the process of glucose transport is secondary active transport.

To learn more about ATP hydrolysis refer to:

https://brainly.com/question/12868948

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