Tight junctions: Create a seal between adjacent cells, preventing the leakage of substances across the tissue. They prevent the passage of molecules between cells.
Adhering junctions: Provide strong mechanical attachments between adjacent cells, acting like “spot welds.” They don’t facilitate communication.
Gap junctions: Form channels between adjacent cells, allowing for the passage of ions, small molecules, and signals. They facilitate communication, not create gaps.
List - I | List – II | ||
A. | F1 Particles | i. | Chromosomes |
B. | Histones | ii. | Cilia |
C. | Axoneme | iii. | Golgi apparatus |
D. | Cisternae | iv. | Mitochondria |
List-I | List-II |
A. Genetically engineered Human Insulin | I. Gene therapy |
B. GM Cotton | II. E. coli |
C. ADA Deficiency | III. Antigen-antibody interaction |
D. ELISA | IV. Bacillus thuringiensis |
List I | List II | ||
---|---|---|---|
A | Mesozoic Era | I | Lower invertebrates |
B | Proterozoic Era | II | Fish & Amphibia |
C | Cenozoic Era | III | Birds & Reptiles |
D | Paleozoic Era | IV | Mammals |