Lipid rafts are specific plasma membrane microdomains, rich in cholesterol and sphingolipids. They are crucial for cellular signaling, protein sorting, and trafficking. These regions are more ordered and densely packed than the surrounding membrane, yet maintain fluidity.
| List I (Enzyme) | List II (Function) |
|---|---|
| (A) Cytochrome oxidase | (I) Electron transport system |
| (B) Topoisomerases | (II) Change linking number |
| (C) Cohesins | (III) DNA Replication |
| (D) PCNA | (IV) Cell cycle |
| List I (Vitamin) | List II (Disorder) |
|---|---|
| (A) Vitamin-A | (I) Night blindness |
| (B) Vitamin-D | (II) Scurvy |
| (C) Vitamin-C | (III) Fat-soluble vitamin |
| (D) Vitamin-K | (IV) Blood clotting |