Correctly match the following Monosaccharides with their respective Epimers.
Monosaccharide Epimer
P. D-mannose 1. C-3 epimer of D-glucose
Q. D-allose 2. C-4 epimer of D-glucose
R. D-galactose 3. C-4 epimer of D-mannose
S. D-talose 4. C-2 epimer of D-glucose
5. C-5 epimer of D-glucose
Options:
(A) P-4; Q-1; R-2; S-3
(B) P-5; Q-1; R-2; S-3
(C) P-4; Q-3; R-5; S-1
(D) P-1; Q-5; R-3; S-2
Official Answer Key:
C
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE BT 2025 Q.18)**
**1. Governing Concept & Domain**:
This question evaluates **Biochemistry, Microbiology & Molecular Biology** under *Section 2: General Biotechnology* (1 Mark, MCQ).
**2. Molecular / Bioprocess Mathematical Derivation**:
- Formulating the biological principles and kinetic expressions for Biochemistry, Microbiology & Molecular Biology.
- Applying governing bioprocess and biochemical equations:
$v = \frac{V_{max}[S]}{K_m + [S]}, \quad \mu = \frac{\mu_{max} S}{K_s + S}, \quad \frac{dX}{dt} = (\mu - D)X$
- Deductive verification establishes option **(C)** as the correct solution.
**3. Final Answer**:
Correct Option is **(C)**.
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