AIDS, caused by HIV, remains without a vaccine due to the virus's high mutation rate and ability to evade the immune system. In contrast, effective vaccines exist for Hepatitis B, Influenza, and Mumps, significantly reducing their global burden.
| 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 | List II |
|---|---|
| (A) D’Herelle and Twort | (I) Bacterial transformation |
| (B) Beadle and Tatum | (II) Penicillin |
| (C) Fleming | (III) One-gene-one-enzyme hypothesis |
| (D) Griffith | (IV) Bacterial viruses |