What Are Cell Junctions

Q. Which of the following sentences is incorrect with regard to cell junctions?

1. Cell junctions are points of contact between plasma membranes of adjacent cells

2. There are 4 types of cell junctions

3. Cell junctions allow ions to pass from one cell to another
4. Fluid tight seals cannot be formed by cell junctions

Q. Choose the correct answer from the options given below:
I. Tight junctions, gap junctions and adherens junctions are different types of cell junctions.
II. They are located in connective tissue, epithelial tissue, neural tissue and muscular tissue.

1. Both I and II are correct
2. Only I is correct
3. Only II is correct
4. Both I and II are incorrect

Q. The cell junctions called tight, adherens and gap junctions are found in

1. connective tissue
2. epithelial tissue
3. neural tissue
4. muscular tissue

Q.

Which of the following type of cell junction is not found in animal tissues ?

1. Adhering junction

2. Tight junction

3. Gap junction

4. Plasmodesmata