Which of these statements does NOT describe gap junctions
A)They are communicating junctions.
B)They play an important role in transmission of electrical activity throughout an entire muscle mass.
C)They are formed by small connecting tunnels that link two adjacent cells and permit exchange of small, water-soluble particles between the cells.
D)Filaments of unknown composition extend between the plasma membranes of two closely adjacent but not touching cells, acting as "spot rivets" to anchor the cells together.

Question

Quizplus · Accepted Answer

The statement that does NOT describe gap junctions is D. Gap junctions do not have filaments of unknown composition that extend between the plasma membranes of two closely adjacent but not touching cells. Instead, they are formed by small connecting tunnels that link two adjacent cells and permit exchange of small, water-soluble particles between the cells.

Which of These Statements Does NOT Describe Gap Junctions