d) Bile salts e) Zymogens For the next few questions, study the figure below and

Question

d) Bile salts e) Zymogens For the next few questions, study the figure below and use the answer choices provided below it Na o Na a) Fructose b) Galactose c) Sucrose d) GLUT-2 e) GLUT4 ab) GLUT-5 23) What molecule is being transported across the apical 24) What is the specific name of the membrane transporter 25) What is the specific name of the membrane transporter membrane at the point marked with the "X above? shown at the point marked "Y above? shown at the point marked "X" above? 26) If starch is being digested in this part of the intestine what pathwayls) in the image above would the monomers take to enter the blood? a) The pathway marked with the x and 2 b) The pathway marked with the W andY c) The monomers could take either pathway d) The monomers would need to cross by transcytosis Page 2 of 6 FORM

Explanation / Answer

23. Fructose (a) molecule is being transported across the apical membrane at the point marked with the "X" above.

24. The specific name of the membrane transporter shown at the point marked "Y" is GLUT-2 (d) that allows bidirectional transport of glucose by active transport.

25. The specific name of the membrane transporter shown at the point marked "X" is GLUT-5 (ab), that allows transport of fructose from the intestinal lumen by facilitated diffusion.

26. Starch is a polysaccharide of glucose. Therefore digestion of starch yields glucose monomers which are transported by the pathway marked with the W and Y. So, the correct option is option B, the pathway marked with the W and Y.

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