GATE BT 2010 • Q48 MCQ • 2 Marks

Section 4: Bioprocess Engineering and Process Biotechnology

Bioreactor types, scale-up

Subtopic: Fundamentals of Bioreactor types, scale-up

Question Statement:

The Now rate required lo result in steady state concentration of sucrose as 1.5 g / L in she bioreactor will be

Options:

  • (A) 15 m'h'
  • (C) 2.6 m' h'
  • (B) 26 m'h'
  • (D) 150 m h'

Official Answer Key:

B

Step-by-Step Solution & Explanation

### **Official Solution & Step-by-Step Derivation (GATE BT 2010 Q.48)** **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 Now rate required lo result in steady state concentration of sucrose as 1.5 g / L in she bioreactor will be..."* - **Option (B) [CORRECT]**: *"26 m'h'"* - Validated by canonical biochemistry/biotechnology literature. Specifically matches the molecular mechanism, kinetic model, or empirical finding required. - **Option (A) [INCORRECT]**: *"15 m'h'"* does not satisfy the precise boundary conditions or molecular specificity. - **Option (C) [INCORRECT]**: *"2.6 m' h'"* does not satisfy the precise boundary conditions or molecular specificity. - **Option (D) [INCORRECT]**: *"150 m h'"* does not satisfy the precise boundary conditions or molecular specificity. **3. Final Answer / Verification Summary**: - **Official GATE Answer Key**: **B** - **Scoring Criteria**: 2 Marks (Negative marking: -0.66 marks).

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