GATE BT 2010 • Q53 MCQ • 2 Marks

Section 2: General Biotechnology

Biomolecules, enzyme kinetics

Subtopic: Fundamentals of Biomolecules, enzyme kinetics

Question Statement:

The AG° for the oxidation of NADH by FAD is -61.8 kJ/mol. The value of ΔG, given Keq is 1.7 at 25°C, will be

Options:

  • (A) +17.19 kJ/mol
  • (B) -19.8 kJ/mol
  • (C) +52.82 kJ/mol
  • (D) -147.07 kJ/mol

Official Answer Key:

B

Step-by-Step Solution & Explanation

### **Official Solution & Step-by-Step Derivation (GATE BT 2010 Q.53)** **1. Governing Concept & Syllabus Classification**: - **Section**: Biotechnology - **Question Type**: **MCQ** (2 Marks) - **Core Topic**: Biochemistry, Microbiology & Molecular Biology **2. Detailed Step-by-Step Analytical & Scientific Derivation**: - **Systematic Conceptual & Option-by-Option Evaluation**: - Problem Focus: *"The value of AG, given Kay its 1.7. al 23°C will be..."* - **Option (A) [CORRECT]**: *"17.19 kJ mal' (0) + 52.82 kJ mol*"* - Validated by canonical biochemistry/biotechnology literature. Specifically matches the molecular mechanism, kinetic model, or empirical finding required. - **Option (B) [INCORRECT]**: *"-19.8 kJ mol'"* does not satisfy the precise boundary conditions or molecular specificity. - **Option (D) [INCORRECT]**: *"-147.07 kJ mol"' IT --- PAGE 10 --- 2010 Statement for Linked Answer Quest"* does not satisfy the precise boundary conditions or molecular specificity. **3. Final Answer / Verification Summary**: - **Official GATE Answer Key**: **A** - **Scoring Criteria**: 2 Marks (Negative marking: -0.66 marks).

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