Question

Match items in List I with items in List II
List I: A. Inactivated Vaccines, B. Live attenuated Vaccines, C. Conjugate Vaccines, D. Toxoid Vaccines
List II: I. Poisonous protein, II. Killed pathogen, III. Weakened pathogen, IV. Weak antigen coat + carrier protein

• A. A-II, B-I, C-III, D-IV
• B. A-II, B-III, C-I, D-IV
• C. A-III, B-I, C-IV, D-II
• D. A-II, B-III, C-IV, D-I

Hint:

Inactivated = Killed. Attenuated = Weak. Toxoid = Toxin.

Answer 1

The Correct Option is D

Step 1: Concept
Vaccines are classified based on the method used to prepare the antigen to stimulate an immune response.

Step 2: Meaning
- Inactivated: Pathogen is killed (usually by heat or chemicals). - Live attenuated: Pathogen is alive but weakened. - Conjugate: Attaches a weak antigen to a strong carrier protein. - Toxoid: Uses an inactivated toxin produced by the pathogen.

Step 3: Analysis
Matching the lists: A (Inactivated) $\rightarrow$ II (Killed); B (Live attenuated) $\rightarrow$ III (Weakened); C (Conjugate) $\rightarrow$ IV (Carrier protein); D (Toxoid) $\rightarrow$ I (Poisonous protein).

Step 4: Conclusion
The correct matching sequence is A-II, B-III, C-IV, D-I. Final Answer: (D)