Subtopic: Fundamentals of Cell structure and signaling
Question Statement:
Which one of the receptors has thehighestaffinity for the ligand?
(A) R1 (B) R2 (C) R3 (D) R4
Linked Answer Questions
Statement for Linked Answer Questions 52 and 53:
A DNA fragment of 5000bp needs to be isolated from E.coli (genome size 4x103kb) genomic library.
Options:
(A) R1
(B) R2
(C) R3
(D) R4
Linked Answer Questions
Statement for Linked Answer Questions 52 and 53:
A DNA fragment of 5000bp needs to be isolated from E.coli (genome size 4x103kb) genomic library.
Official Answer Key:
A
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE BT 2013 Q.51)**
**1. Governing Concept & Syllabus Classification**:
- **Section**: BT
- **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: *"Which one of the receptors has thehighestaffinity for the ligand?..."*
- **Option (A) [CORRECT]**: *"R1"*
- Validated by canonical biochemistry/biotechnology literature. Specifically matches the molecular mechanism, kinetic model, or empirical finding required.
- **Option (B) [INCORRECT]**: *"R2"* does not satisfy the precise boundary conditions or molecular specificity.
- **Option (C) [INCORRECT]**: *"R3"* does not satisfy the precise boundary conditions or molecular specificity.
- **Option (D) [INCORRECT]**: *"R4
Linked Answer Questions
Statement for Linked Answer Questions 52 a"* 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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