GATE BT 2025 • Q39 MCQ • 2 Marks

Section 2: General Biotechnology

Biochemistry, Microbiology & Molecular Biology

Subtopic: Enzyme Kinetics, Cell Biology & Metabolism

Question Statement:

Correctly match the type of Hypersensitivity reaction with its respective Example. Hypersensitivity reaction Example P. Type I 1. Tuberculin reaction Q. Type II 2. Arthus reaction R. Type III 3. Chronic urticaria S. Type IV 4. Systemic anaphylaxis

Options:

  • (A) P-3; Q-4; R-2; S-1
  • (B) P-4; Q-3; R-1; S-2
  • (C) P-4; Q-3; R-2; S-1
  • (D) P-2; Q-3; R-4; S-1

Official Answer Key:

C

Step-by-Step Solution & Explanation

### **Official Solution & Step-by-Step Derivation (GATE BT 2025 Q.39)** **1. Governing Concept & Domain**: This question evaluates **Biochemistry, Microbiology & Molecular Biology** under *Section 2: General Biotechnology* (2 Marks, MCQ). **2. Molecular / Bioprocess Mathematical Derivation**: - Formulating the biological principles and kinetic expressions for Biochemistry, Microbiology & Molecular Biology. - 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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