Refer to the figure below. The type of cell junction shown is most efficient in
A) animal cells that must exchange a lot of material with adjacent cells.
B) animal cells that conduct electrical activity, as in the heart.
C) muscles, where rapid reflexes are required.
D) epithelial cells that line animal body cavities.
E) skin cells that receive stress.

Question

Refer to the figure below.  The type of cell junction shown is most efficient in
A) animal cells that must exchange a lot of material with adjacent cells. 
B) animal cells that conduct electrical activity, as in the heart. 
C) muscles, where rapid reflexes are required. 
D) epithelial cells that line animal body cavities. 
E) skin cells that receive stress.

Quizplus · Accepted Answer

The type of cell junction shown in the figure is a tight junction or occluding junction, which forms a continuous barrier between cells and prevents the leakage of molecules and ions between cells. This makes it an efficient junction for epithelial cells that line animal body cavities, such as the lining of the digestive tract, urinary tract, and blood vessels, where there is a need to maintain a selective barrier to regulate the exchange of molecules between the lumen and the underlying tissues.

Refer to the Figure Below