Section 3: Genetics, Cellular and Molecular Biology
Recombinant DNA technology
Subtopic: Fundamentals of Recombinant DNA technology
Question Statement:
Match the products in Group I with the microbial culture systems in Group II:
Group I:
P. Primary metabolite
Q. Secondary metabolite
R. Recombinant therapeutic protein
S. Single cell protein
Group II:
1. Trophophase synthesis
2. Idiophase synthesis
3. High-cell density fed-batch
4. Continuous culture
Options:
(A) P-1, Q-2, R-3, S-4
(B) P-2, Q-1, R-4, S-3
(C) P-1, Q-3, R-4, S-2
(D) P-3, Q-2, R-1, S-4
Official Answer Key:
A
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE BT 2010 Q.43)**
**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: *"Match the products in Group I with the microbial culures in Group II used for cheir industrial
production
Group!
P. Gluconic acid
Group Il
1. Leuconostoc resenteroids
Q. L - Lysine
R. Dextran
2. Aspergillus niger
S. Cell..."*
- **Option (C) [CORRECT]**: *"P-2. Q-1, R-3, S-4"*
- Validated by canonical biochemistry/biotechnology literature. Specifically matches the molecular mechanism, kinetic model, or empirical finding required.
- **Option (B) [INCORRECT]**: *"P-1, Q-3. R-4, S-2
P-2, Q-3, R-1. S-4"* does not satisfy the precise boundary conditions or molecular specificity.
- **Option (D) [INCORRECT]**: *"P-3, Q-2, R-4, S-1"* does not satisfy the precise boundary conditions or molecular specificity.
**3. Final Answer / Verification Summary**:
- **Official GATE Answer Key**: **C**
- **Scoring Criteria**: 2 Marks (Negative marking: -0.66 marks).
Practice This in Real CBT Exam Interface
Test yourself with the official TCS-iON palette, virtual calculator, and immediate performance analytics.