Question

In: Biology

Epithelial cells of the intestine contain a transport protein, the sodium/glucose symporter, that allows for uptake...

Epithelial cells of the intestine contain a transport protein, the sodium/glucose symporter, that allows for uptake of glucose from the intestinal lumen not the epithelial cells. Is this an active or passive transporter, and if active, what is the energy source for the transport and therefore the classification of this protein? What other protein needs to be present and active for the sodium/glucose symporter to work, and why?

Solutions

Expert Solution

The Sodium/Glucose transporter present at the apical membrane of intestinal epithelial cells is a secondary active transporter.

Thr energy source for this transport is an chemical potential developed by the export of Sodium ions into the bloodstream which is achieved by spending ATP. The downward chemical gradient allows cells to import Glucose without actively spending energy. That is why the classification of this protein is a secondary active transporter.

For the Na/Glucose pump to work, the other protein that is require is the Na/K pump that settd up the chemical gradient required for driving Glucose import into the cell.

gladiator answered 2 years ago
Next > < Previous

Related Solutions

Transport of glucose into epithelial cells lining your small intestine is dependent on a pre-existing electrochemical...
Transport of glucose into epithelial cells lining your small intestine is dependent on a pre-existing electrochemical gradient of sodium (Na+) ions across the apical plasma membrane. If that gradient is eliminated, glucose transport stops. This is one example of ____________________. passive transport secondary active transport (coupled transport) primary active transport an aquaporin
The uptake of nutrients by the cells of the small intestine for transport into either bloodstream...
The uptake of nutrients by the cells of the small intestine for transport into either bloodstream or lymphatic system is called _________________________. Select one: a. Digestion b. Peristalsis c. Fermentation d. Absorption The secretions grind bolus to a semi-liquid mass of partially digested food: chyme in this organ ____________________. Select one: a. Small Intestine b. Large Intestine c. Stomach d. Esophagus Foods that would provide a lot of polysaccharides (complex carbs and starch) are Select one: a. Legumes b. Broccoli...
Discuss glucose transport in epithelial cells, include tight junctions in your discussion.
Discuss glucose transport in epithelial cells, include tight junctions in your discussion.
Cholera toxin inhibits the Na+/K+ATPase activity of intestinal epithelial cells. Resulting with decreased uptake of glucose....
Cholera toxin inhibits the Na+/K+ATPase activity of intestinal epithelial cells. Resulting with decreased uptake of glucose. Describe why inhibiting the Na/K+ ATPase pump affects glucose uptake in the intestine.
The Na –glucose symport system of intestinal epithelial cells couples the \"downhill\" transport of two Na...
The Na –glucose symport system of intestinal epithelial cells couples the \"downhill\" transport of two Na ions into the cell to the \"uphill\" transport of glucose, pumping glucose into the cell against its concentration gradient. If the Na concentration outside the cell ([Na ]out) is 163 mM and that inside the cell ([Na ]in) is 23.0 mM, and the cell potential is -51.0 mV (inside negative), calculate the maximum ratio of [glucose]in to [glucose]out that could theoretically be produced if...
The Na –glucose symport system of intestinal epithelial cells couples the \"downhill\" transport of two Na...
The Na –glucose symport system of intestinal epithelial cells couples the \"downhill\" transport of two Na ions into the cell to the \"uphill\" transport of glucose, pumping glucose into the cell against its concentration gradient. If the Na concentration outside the cell ([Na ]out) is 153 mM and that inside the cell ([Na ]in) is 19.0 mM, and the cell potential is -49.0 mV (inside negative), calculate the maximum ratio of [glucose]in to [glucose]out that could theoretically be produced if...
Explain what type of mechanism will be used to transport glucose from your intestine to your...
Explain what type of mechanism will be used to transport glucose from your intestine to your muscles. The relative levels of glucose are provided below. a. Intestinal epithelium cell: high glucose to Interstitial fluid between intestinal cell and blood vessel: very low (blood vessels have “clefs” that glucose fits through to enter blood by bulk flow.) b. Na+ is required for the transport into the intestinal epithelium cell. Why? How is the level of Na+ kept low in the intestinal...
In many animal cells, the uptake of glucose into the cell occurs by a cotransport mechanism, in which glucose is cotransported with Na^+ ions.
In many animal cells, the uptake of glucose into the cell occurs by a cotransport mechanism, in which glucose is cotransported with Na+ ions. Complete the diagram below using the following steps. Drag the pink labels to the pink targets, indicating the relative concentration at glucose inside and outside the cell. Drag the correct white target to the white target, indicating the direction that Na+ ions and glucose move through the cotransporter Drag the blue labels to complete the sentences...
Describe the general effects of blood insulin and blood glucagon on 1) glucose uptake by cells...
Describe the general effects of blood insulin and blood glucagon on 1) glucose uptake by cells and 2) catabolic/anabolic reactions in the body. Distinguish between catabolic and anabolic reactions.
The following questions are related to glucose and its transport into cells. A. Why do cells...
The following questions are related to glucose and its transport into cells. A. Why do cells need a protein to transport glucose across the cell membrane? i.e.could glucose simply diffuse across the lipid bilayer? (1 point) B. Even after glucose is transported into the cell, there is effectively no increase in intracellular glucose concentration. This can be attributed to the action of hexokinase, the first enzyme in the glycolytic pathway. Explain. (2 points) C. GLUT1 is a glucose transporter found...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT