In animal cell culture, a CO2 enriched atmosphere in the incubator chamber is used to maintain the
culture pH between 6.9 and 7.4. Which one of the following statements is CORRECT?
Options:
(A) Higher the bicarbonate concentration in the medium, higher should be the requirement of
gaseous CO2
(B) Lower the bicarbonate concentration in the medium, higher should be the requirement of
gaseous CO2
(C) Higher the bicarbonate concentration in the medium, lower should be the requirement of
gaseous CO2
(D) CO2 requirement is independent of bicarbonate concentration in the medium
Official Answer Key:
C
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE BT 2016 Q.40)**
**1. Governing Concept & Domain**:
This question evaluates **Biochemistry, Microbiology & Molecular Biology** under *Section 2: General Biotechnology* (2 Marks, 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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