Occluding junctions are found between the epithelial cells lining the lumen of the intestine of mammals. They function to
A) fasten cells together into strong sheets.
B) cross-link the cytoskeleton network of one cell to that of adjacent cells.
C) maintain the correct location of different membrane proteins on the cell surface.
D) actively transport ions from one cell to another.
E) allow chemical and electrical communication between adjacent cells.

Question

Quizplus · Accepted Answer

Occluding junctions, also known as tight junctions, help maintain the polarity of epithelial cells by preventing the movement of membrane proteins between the apical and basolateral surfaces, thus maintaining the correct location of different membrane proteins.

Occluding Junctions Are Found Between the Epithelial Cells Lining the Lumen