Question

In a tissue, cells are bound together by physical attachment between cell to cell or between cell to extracellular
matrix. Following are some of the characteristics of cell junctions:

1. Adherens junctions are cell-cell anchoring junctions connecting actin filament in one cell with that in the next cell.

2. Desmosomes are cell-matrix anchoring junctions connecting actin filament in one cell to extracellular matrix

3. Gap junctions are channel forming junctions allowing passage of small water soluble molecules from cell to cell.

4. Tight junctions are occluding junctions, which seal gap between two cells.

5. Hemidesmosomes are cell-matrix anchoring junctions connecting intermediate filament in one cell to extracellular matrix


Which of the following combination of statements is not correct?
a. 1 and 2
b. 1 and 3
c. 3 and 4
d. 4 and 5

Answer 1

Answer:

Cell junctions (or intercellular bridges) are a class of cellular structures consisting of multiprotein complexes that provide contact or adhesion between neighboring cells or between a cell and the extracellular matrix in animals.