Match the immunological terms in Column I with their function/description in the
Column II
Column I Column II
P. J gene 1. Suppresses immune system by
blocking calcineurin
Q. Cyclosporin 2. Antibody binding site on a large
molecule
R. Epitope 3. Small foreign molecule which elicits
an immune response only when
combined with a carrier molecule
S. Hapten 4. Contributes to antibody diversity
Options:
(A) P-3; Q-4; R-2; S-1
(B) P-2; Q-4; R-1; S-3
(C) P-4; Q-1; R-2; S-3
(D) P-1; Q-3; R-4; S-2
Official Answer Key:
C
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE BT 2026 Q.37)**
**1. Governing Concept & Domain**:
This question evaluates **Cellular & Applied Biotechnology** under *Section 5: Plant, Animal & Microbial Biotechnology* (2 Marks, MCQ).
**2. Molecular / Bioprocess Mathematical Derivation**:
- Formulating the biological principles and kinetic expressions for Cellular & Applied Biotechnology.
- Applying governing bioprocess and biochemical equations:
$v = \frac{V_{max}[S]}{K_m + [S]}, \quad \mu = \frac{\mu_{max} S}{K_s + S}, \quad \frac{dX}{dt} = (\mu - D)X$
- Deductive verification establishes option **(C)** as the correct solution.
**3. Final Answer**:
Correct Option is **(C)**.
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