Question

Which of the following statements about gap junctions is false?

A) Gap junctions are made of connexons
B) Molecules up to 900 daltons in molecular mass can move across gap junctions
C) Because gap junctions do not allow ions to pass through, they are not used for electrically coupling cells
D) Gap junctions in the plants are called plasmodesmata

Answer 1

Option (C).

Step-by-step explanation:

Gap junction may be defined as the junctions that allow the communication between the neighboring cells. Gap junctions are leaky and allows the passage of the molecules easily.

Gap junctions constitute of connexons. Gap junctions can easily allow the flow of ions and small molecules from one cell to another cell. Gap junctions are known for the electrical coupling of cells as ions can easily pass through the gap junctions.

Thus, the correct answer is option (C).