Tight Junction
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| 1. Tight junctions | i. Help cells communicate with each other |
| 2. Gap junctions | ii. Provides anchoring function |
| 3. Adherens junctions | iii. Prevent substances from leaking across the tissue |
- 1-iii, 2-ii, 3-i
- 1-ii, 2-iii, 3-i
- 1-iii, 2-i, 3-ii
- 1-i, 2-iii, 3-ii
Plasma membrane helps in
A. Transportation of only water in and out of cell
B. Protein synthesis
C. Osmoregulation
D. Nucleic acid and synthesis.
(i) All the cells of the epithelium are held together with little intercellular materials
(ii) In almost all animal tissues specialised junctions provide both structural and functional link between its individual cells
(iii) Tight junctions prevent substances from leaking across a tissue
(iv) Adhering junctions provide cementing to keep neighbouring cells together.
(v) Gap junctions provide cytoplasmic channels between cells for passage of ions, small molecules and sometimes big molecules.
- (iv) and (v)
- (i), (ii), (iii), (iv) and (v)
- (ii) and (iii)
- (i), (ii) and (iii)
- Tight junction
- Gap junction
- Both a & c
- Adhering junction
Molecules cannot penetrate or spread through cracks in between cells. This is due the presence of
Urea in both
Urea and Uric acid
Urea and Ammonia
Ammonia and Uric acid
| 1. Tight junctions | i. Help cells communicate with each other |
| 2. Gap junctions | ii. Provides anchoring function |
| 3. Adherens junctions | iii. Prevent substances from leaking across the tissue |
- 1-iii, 2-ii, 3-i
- 1-ii, 2-iii, 3-i
- 1-iii, 2-i, 3-ii
- 1-i, 2-iii, 3-ii
Fill in the blanks by choosing the correct alternative from those given in the brackets.
b. ___________ is the membrane of transport of minerals in plants. (cell wall/cell membrane)
- Primary wall
- Middle lamella
- Primary wall + Middle lamella + Primary wall
- Middle lamella + Primary wall
Molecules cannot penetrate or spread through cracks in between cells. This is due the presence of
Gap Junction
Tight junction
Desmosome
Adherens junction
| 1. Tight junctions | i. Help cells communicate with each other |
| 2. Gap junctions | ii. Provides anchoring function |
| 3. Adherens junctions | iii. Prevent substances from leaking across the tissue |
- 1-iii, 2-ii, 3-i
- 1-ii, 2-iii, 3-i
- 1-iii, 2-i, 3-ii
- 1-i, 2-iii, 3-ii
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-Gap junctions, 2-Adhering junctions, 3-Tight junctions
- 1-Tight junctions, 2-Adhering junctions, 3-Gap junctions
- 1-Adhering junctions, 2-Tight junctions, 3-Gap junctions
- 1-Gap junctions, 2-Tight junctions, 3-Adhering junctions
| 1. Tight junctions | i. Help cells communicate with each other |
| 2. Gap junctions | ii. Provides anchoring function |
| 3. Adherens junctions | iii. Prevent substances from leaking across the tissue |
- 1-iii, 2-ii, 3-i
- 1-ii, 2-iii, 3-i
- 1-iii, 2-i, 3-ii
- 1-i, 2-iii, 3-ii
Molecules cannot penetrate or spread through cracks in between cells. This is due the presence of
Gap Junction
Tight junction
Desmosome
Adherens junction
