Question

In a batch culture, biomass concentration increases from \(0.5~g/L\) to \(4~g/L\) in 2 hours. The specific growth rate (\(\mu\)) is

• A. \(0.693~h^{-1}\)
• B. \(1.039~h^{-1}\)
• C. \(1.386~h^{-1}\)
• D. \(2.079~h^{-1}\)

Hint:

For exponential microbial growth, remember: \[ \boxed{ \mu=\frac{\ln X_2-\ln X_1}{t} } \] Also, \[ \boxed{ \ln\left(\frac{X_2}{X_1}\right) = \ln X_2-\ln X_1 } \] This shortcut makes calculations much easier in competitive examinations.

Answer 1

The Correct Option is B