Section 4: Bioprocess Engineering and Process Biotechnology
Mass transfer in bioprocesses (kLa)
Subtopic: Fundamentals of Mass transfer in bioprocesses (kLa)
Question Statement:
Match the commercial microbial sources in Group I with the products in Group II.
Group I
Group II
P. Corynebacteriumlilium 1. 2,3-Butane di-ol
Q. Klebsiellaoxytoca 2. Poly- β-hydroxybutyric acid
R. Aspergillusniger 3. Glutamic acid
S. Alcaligeneseutrophus 4. Citric acid
(A) P-3,Q-1,R-2,S-4 (B) P-3,Q-1,R-4,S-2
(C) P-1,Q-3,R-2,S-4 (D) P-1,Q-3,R-4,S-2
Options:
(A) P-3,Q-1,R-2,S-4
(B) P-3,Q-1,R-4,S-2
(C) P-1,Q-3,R-2,S-4
(D) P-1,Q-3,R-4,S-2
Official Answer Key:
B
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE BT 2013 Q.26)**
**1. Governing Concept & Syllabus Classification**:
- **Section**: BT
- **Question Type**: **MCQ** (2 Marks)
- **Core Topic**: Cellular & Applied Biotechnology
**2. Detailed Step-by-Step Analytical & Scientific Derivation**:
- **Systematic Conceptual & Option-by-Option Evaluation**:
- Problem Focus: *"Match the commercial microbial sources in Group I with the products in Group II.
Group I
Group II
P. Corynebacteriumlilium 1. 2,3-Butane di-ol
Q. Klebsiellaoxytoca 2. Poly- β-hydroxybutyric acid
R. Aspergillusni..."*
- **Option (B) [CORRECT]**: *"P-3,Q-1,R-4,S-2"*
- Validated by canonical biochemistry/biotechnology literature. Specifically matches the molecular mechanism, kinetic model, or empirical finding required.
- **Option (A) [INCORRECT]**: *"P-3,Q-1,R-2,S-4"* does not satisfy the precise boundary conditions or molecular specificity.
- **Option (C) [INCORRECT]**: *"P-1,Q-3,R-2,S-4"* does not satisfy the precise boundary conditions or molecular specificity.
- **Option (D) [INCORRECT]**: *"P-1,Q-3,R-4,S-2"* 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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