The total number of orbitals in a shell with principal quantum number ‘n’ is

TLS Online TPP Program

#Question id: 34195

#XL - S Microbiology

Which of the following are features of the stationary phase in a microbial growth curve?

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#Question id: 34196

#XL - S Microbiology

Which of the following are reasons for the onset of the death phase?

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#Question id: 34197

#XL - S Microbiology

In a typical batch culture growth curve, which of the following can be used to monitor bacterial population over time?

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#Question id: 34198

#XL - S Microbiology

A bacterial culture has an initial population of 2 × 10⁶ cells. After 3 hours of exponential growth, the population becomes 1.6 × 10⁷ cells. Calculate the number of generations (n) that have occurred in this time.

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#Question id: 34199

#XL - S Microbiology

A culture has a specific growth rate (μ) of 0.693 h^-1. Calculate the doubling time (g) in minutes.

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#Question id: 34200

#XL - S Microbiology

A culture has a cell concentration of 1 × 10⁹ cells/mL and a biomass yield coefficient (Y_x/s) of 0.5 g biomass/g substrate. If 2 grams of substrate are consumed, calculate the biomass produced (in grams).