In animal cell junctions, _______ seal intercellular spaces, _______ reinforce attachments, and _______ allow for communication between cells.
A) keratins; desmosomes; connexins
B) tight junctions; desmosomes; gap junctions
C) cell recognition molecules; adhesion molecules; tight junctions
D) junction proteins; adhesion molecules; connexins
E) desmosomes; gap junctions; tight junctions

Question

Quizplus · Accepted Answer

Tight junctions seal intercellular spaces, desmosomes reinforce attachments, and gap junctions allow for communication between cells. Keratins are intermediate filaments, not junction proteins. Cell recognition molecules are involved in cell signaling and recognition, but not in junctions. Adhesion molecules are important for cell-cell interactions, but not necessarily in junctions. Connexins are specifically involved in gap junctions, but not in tight or desmosome junctions. Therefore, the best choice is B.

In Animal Cell Junctions, _______ Seal Intercellular Spaces, _______ Reinforce

In Animal Cell Junctions, _ Seal Intercellular Spaces, _ Reinforce