The figure below illustrates glucose uptake in the intestine into the endothelial cells and eventually from the intestine into the blood.IntestinalBloodlumenMicrovili2KEpithelial cellO3 Na2 Na goNa"K*ATPaseGlucoseGlucoseThe figure shows three transport systems I, II, and III which are aandrespectively.A. antiporter, symporter, and uniporterB. uniporter, antiporter, and symporterc. symporter, antiporter, and uniporterD. symporter, uniporter, and antiporterE, antiporter, uniporter, symporter

Uniporter Uniporter is a transport system in which it carries a single ion or molecule. Antiporter…

Answered: transport systems I

Science

Biology

transport systems I

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter3: Cell Structure And Function

Section: Chapter Questions

Problem 14RQ: Active transport must function continuously because_______. a. plasma membranes wear out b. cells...

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How is glucose actively transported from gut lumen to gut epithelium even when the concentration of glucose is higher in the epithelial cells A. Na+ -glucose antiporter B. Na+ -glucose symporter C. K+ -glucose symporter D. Ca2+ -glucose symporter E. H+ -glucose symporter
Which is a correct statement about the Na+/K+ transporter (pump), and its cytology and cellular role? It is found the basal side of intestinal epithelial cells, pumping Na+ out of the cell into the blood. It is found on the plasma membrane of neurons, pumping Na+ into axons from the blood. It is found on the membrane of the lysosome, pumping K+ into the lumen of the lysosome. It is found on the apical side of intestinal epithelia, pumping K+ into the lumen of the intestine.
The cells lining the small intestine rapidly move large quantities of glucose from the glucose-rich food into their glucose-poor cytoplasm. Using this information which transport mechanism is most probably functioning in the intestinal cells? a) simple diffusion b) phagocytosis c) active transport pump d) exocytosis e) Facilitated diffusion
The SGLT transporter may be best described as a: a) symporter b) antiporter c) pump protein d) voltage-gated channel The two emulsifying agents which aid the transport of lipids in the intestine are: a) secretin and cholecystokinin b) lipases and proteases c) bile salts and momoacylglycerols d) peptide balls and fat globules Triacylglycerols are transported from the intestinal cells to the lymph system by: a) symporters b) antiporters c) active transport pumps d) chylomicreons Triacylglycerols are re-assembled from monoacylglycerols and fatty acids at which site in the intestinal cell? A) nucleus b) mitochondria c) ribosome d) smooth endoplasmic reticulum Glycocholate is a: a) transport protein b) lipase coenzyme c) emulsifying agent d) hormone
. (a) What is the order of magnitude of the number ofmicroorganisms in the human intestinal tract? A typical bacterial length scale is 1026 m. Estimate the intestinal volume and assume 1% of it is occupied by bacteria. (b) Does the number of bacteria suggest whetherthe bacteria are beneficial, dangerous, or neutral forthe human body? What functions could they serve?
Polyethylene glycol (PEG) is a solute that is consumed in order to "clean out" the digestive tract in preparation for a colonoscopy. PEG cannot enter intestinal cells as there is no transport mechanism for it. How would this affect the absorption of water into the small intestine? (assume that it is taken at the correct dose and you are not actually reversing the concentration gradient across the intestinal cells.) Explain your answer in terms of concentration gradients.
Transport of glucose across the basolateral membrane of intestinal epithelial cells and into the vascular system requires which of the following conditions to occur? Select one: a. Sodium concentration on the inside of the epithelial cell is equal to that outside the basolateral membrane b. Sodium concentration is higher on the inside of the epithelial cell than on the outside of the basolateral membrane c. Sodium concentration inside the epithelial cell is lower than sodium concentration in the intestinal lumen d. Sodium concentration inside the epithelial cell is higher than that sodium concentration in the intestinal lumen
Which of these is not an example of cotransport? a. Movement of glucose and Na+ through the apical epithelial membrane in the intestinal epithelium b. Movement of Na+ and K+ through the action of the Na+/K+pumps c.Movement of Na+and glucose across the kidney tubules d.Movement of Na+ into a cell while Ca 2+moves out
he human body requires various nutrients which are essential for health and can be obtained from a balanced diet. Compare and contrast the digestion and absorption of (a) proteins and (b) fats along the gastrointestinal (GI) tract. Discuss the principal enzymes involved and the carrier transport mechanisms and/or intracellular processes at play.
Select the appropriate transport mechanism(s) that is/are described below. 1. Requires expenditure of energy in the form of ATP to transport cell materials. a. Active Transport b.Bulk Transport c. Passive Transport d. Active and bulk e. Active and passive f. bulk and passive 2.Re-absorption of nutrients in the kidney. a. Active Transport b.Bulk Transport c. Passive Transport d. Active and bulk e. Active and passive f. bulk and passive 3.Gas exchange of organisms is an application of this process.
Here is a chloride cell in the gill epithelium of a fish. For reference, NKA = Na+/K+ ATPaseNKCC = Na+/K+/Cl- cotransporter. (image 1) The same proteins have been identified in shark rectal gland, marine birds and reptiles (salt glands in nostrils), marine fishes (chloride cells in their gills) and mammals that transport salt in their kidneys. (image 2) When biologists were testing the mechanism of salt excretion in sharks, they used a chemical called ouabain to inhibit the Na+/K+ ATPase to see if there was an effect. Which result would you expect to see with ouabain treatment? A. A decrease in Cl- in the epithelial cells. B. An increase in ADP in the epithelial cells. C. An increase in K+ in the epithelial cells. D. A decrease in Na+ in the epithelial cells.
Using the principles of osmosis, explain why movement of Na + through a plasma membrane is followed by movement of water. Use this concept to explain the rationale on which oral rehydration therapy is based.