What Are Cell Junctions

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

1. Gizzard

2. Pharynx

3. Stomach

4. Typhlosole

Q. In which one of the following preparations are you likely to come across cell junctions most frequently?

1. Ciliated epithelium
2. Thrombocytes
3. Tendon
4. Hyaline cartilage

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

1. Connective tissue
2. Neural tissue
3. Muscular tissue
4. Epithelial tissue

Q.

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

1. Adhering junction

2. Tight junction

3. Plasmodesmata

4. Gap junction

Q. Match the cell junctions to their functions.

1. No exchange
2. Allows exchange
3. Anchor to ECM
4. Increase area

Q. Select the incorrect pair

1. Plasmodesmata : found in animals
2. Gap junction : facilitates communication
3. Adherens junction : cements neighbouring cells together
4. Tight junction : found in blood-brain barrier

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 types of cell junction is not found in animal tissues?

1. Tight Junctions
2. Gap Junctions
3. Adherens junctions
4. Plasmodesmata

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. Given below are the functions of cell junctions.
1. Help to stop substances from leaking across a tissue.
2. Perform cementing to keep neighbouring cells together.
3. Facilitate the cells to communicate.

Choose the correct option.

1. 1-Gap junctions, 2-Adhering junctions, 3-Tight junctions
2. 1-Adhering junctions, 2-Tight junctions, 3-Gap junctions
3. 1-Gap junctions, 2-Tight junctions,
   3-Adhering junctions
4. 1-Tight junctions, 2-Adhering junctions, 3-Gap junctions