Three distinct antigen X, Y and Z were use to raise antibody. Which one of them statements regarding antibody titers in serum is Incorrect?

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#Question id: 21619

#Unit 12. Biochemical Engineering

For a microbial culture, if the doubling time is 0.231 h, the specific growth rate (in h-1) will be (assume that the endogenous metabolism is negligible)

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#Question id: 21680

#Unit 12. Biochemical Engineering

Consider a bacterium that grows with doubling time of 20 min in the exponential phase of its growth cycle and acquire 10 random mutrations in its genome in every generation. How many mutations will it acquire after 48 hr of growth in exponential phase?

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#Question id: 21690

#Unit 12. Biochemical Engineering

A bacterial population, growing in batch culture, increases from 1000 cells to 10,00,000 cells in 5 hours. What is the generation time of the bacteria?

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#Question id: 21754

#Unit 12. Biochemical Engineering

dilution of a microbial culture was prepared by adding 1 ml of the culture to 9 ml of sterile blank. Further, 200 𝝁𝑳 from the diluted culture was spread on an agar plate; and 150 colonies were observed after the incubation period. Calculate the CFU/mL of the original sample

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#Question id: 21644

#Unit 12. Biochemical Engineering

In an exponentially growing batch culture of Saccharomyces cerevisiae, the cell density is 30 𝒈𝑳^−𝟏(𝑫𝑪𝑾), the specific growth rate (𝝁) is 𝟎.𝟒𝒉^−𝟏 and substate uptake rate (𝒒) is 𝟏𝟖𝒈𝑳^−𝟏𝒉^−𝟏. The cell nyield coefficient 𝒀𝒙/𝒔 will be

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#Question id: 21671

#Unit 12. Biochemical Engineering

A stirred tank bioreactor of 𝟐.𝟕𝒎^𝟑 is agitated using a Rushton turbine with diameter 0.5 m and stirrer speed of 𝟏 𝒔^−𝟏. If the fermentation broth has viscosity and density of 𝟏𝟎^−𝟐 𝒑𝒂.𝒔 and 𝟏𝟎𝟎𝟎𝒌𝒈.𝒎^−𝟑 respectively, the mixing time (in seconds) for the bioreactor will be