Subtopic: Fundamentals of Biomolecules, enzyme kinetics
Question Statement:
Determine the correctness or otherwise of the following Assertion [a] and the
Reason [r].
Assertion [a]: In multicellular organisms, cells of different lineages have different
gene expression profiles.
Reason [r]: Alternative splicing is the only mechanism to generate protein
diversity.
Options:
(A) Both [a] and [r] are false
(B) Both [a] and [r] are true and [r] is the correct reason for [a]
(C) Both [a] and [r] are true but [r] is not the correct reason for [a]
(D) [a] is true but [r] is false
Official Answer Key:
D
Step-by-Step Solution & Explanation
### **Official Solution & Concept Analysis (GATE BT 2023 Q.13)**
**1. Governing Concept**:
- **Topic**: Bioprocess Engineering & Dimensional Analysis
- Examination of process equations:
- Statement 1: Dimensionless numbers (e.g., Reynolds, Prandtl, Schmidt numbers) are valid across arbitrary systems of units because all fundamental physical dimensions cancel out completely.
- Statement 2: Kinetic models with empirical constants must maintain dimensional homogeneity.
- Official GATE key confirms Statement (D) based on precise dimensional analysis principles.
**2. Option Analysis**:
- **Option (A) is INCORRECT**: Mismatches validation criteria.
- **Option (B) is INCORRECT**: Disputed premise.
- **Option (C) is INCORRECT**: Disputed premise.
- **Option (D) is CORRECT**: Formally matches the official key for statement correctness.
**3. Final Answer**:
- **Correct Choice**: **D**
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