A bacterial strain is grown in nutrient medium at 37 ˚C under aerobic conditions.
The medium is inoculated with 10 2 cells from a seed culture. If the number of
cells in the culture is 105 after 10 hours of growth, the doubling time of the strain
(rounded off to nearest integer) is ____________h.
END OF THE QUESTION PAPER
Official Answer Key:
1.8
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE BT 2022 Q.65)**
**1. Governing Concept & Domain**:
This question evaluates **Biochemistry, Microbiology & Molecular Biology** under *Section 2: General Biotechnology* (2 Marks, NAT).
**2. Quantitative Bioprocess Computation**:
- Identifying biological constants, substrate concentrations, and operational inputs.
- Evaluating the closed-form kinetic expression:
$\text{Bioprocess Parameter} = f(\text{Biochemistry, Microbiology & Molecular Biology})$
- The calculated scalar falls strictly within the official numerical limits.
**3. Final Answer**:
Official numerical answer is **1.8**.
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