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Tight junctions are cell-cell junctions found between adjacent cells of the epithelium that lines the small intestine. What is the function of these cellular junctions? a) to recognize pathogenic organisms present in the lumen of the small intestine b) to seal the epithelium and prevent movement of substances between cells c) to attach epithelial cells to a basement membrane O d) to release digestive enzymes into the intestinal lumen

Tight junctions are cell-cell junctions found between adjacent cells of the epithelium that lines the small intestine. What is the function of these cellular junctions? a) to recognize pathogenic organisms present in the lumen of the small intestine b) to seal the epithelium and prevent movement of substances between cells c) to attach epithelial cells to a basement membrane O d) to release digestive enzymes into the intestinal lumen

Chemistry for Today: General, Organic, and Biochemistry
Chemistry for Today: General, Organic, and Biochemistry
9th Edition
ISBN:9781305960060
Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Publisher:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Chapter25: Body Fluids
Section: Chapter Questions
Problem 25.15E
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Tight junctions are cell-cell junctions found between adjacent cells of the epithelium that lines the small intestine. What is the function of these cellular junctions? a) to recognize pathogenic organisms present in the lumen of the small intestine b) to seal the epithelium and prevent movement of substances between cells O c) to attach epithelial cells to a basement membrane d) to release digestive enzymes into the intestinal lumen
Transcribed Image Text:Tight junctions are cell-cell junctions found between adjacent cells of the epithelium that lines the small intestine. What is the function of these cellular junctions? a) to recognize pathogenic organisms present in the lumen of the small intestine b) to seal the epithelium and prevent movement of substances between cells O c) to attach epithelial cells to a basement membrane d) to release digestive enzymes into the intestinal lumen
A gap junction is a channel that connects adjacent cells. What kinds of substances can pass through a gap junction? a) ions that can regulate heartbeat b) raw materials for protein synthesis c) subunits of nucleic acids d) all of the substances described in the other answers apply
Transcribed Image Text:A gap junction is a channel that connects adjacent cells. What kinds of substances can pass through a gap junction? a) ions that can regulate heartbeat b) raw materials for protein synthesis c) subunits of nucleic acids d) all of the substances described in the other answers apply
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