The rate constant of a radioactive substance is 4 years ^-1. The value of half-life will be:

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#Question id: 3299

#Section 3: Genetics, Cellular and Molecular Biology

There are four alleles, A1, A2, A3 and A4 in equal abundance in frequency. Hardy-Weinberg equilibrium frequencies of the total heterozygote would be

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#Question id: 28113

#Section 5: Bioprocess Engineering and Process Biotechnology

Impeller of diameter 0.25 m with stirrer speed of 1 s-¹ is used in 2 m³ baffled bioreactor for the mixing purpose of the medium. The mixing time is equal to (assuming medium viscosity = 0.01 Pa s and density = 1000 kg m^-1)

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#Question id: 14171

#Section 5: Bioprocess Engineering and Process Biotechnology

The growth of baker’s yeast (S. cerevisiae) on glucose may be simply described by the following equation:

In a batch reactor of volume 10^5 l, the final desired yeast concentration is 50 gdw/l. Using the above reaction stoichiometry. Determine the concentration and total amount of glucose in the nutrient medium?

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#Question id: 3624

#Section 3: Genetics, Cellular and Molecular Biology

To carry out a complementation test, parents that are homozygous for different mutations are crossed, producing offspring that mutant phenotype, it is due to

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#Question id: 15628

#Section 4: Fundamentals of Biological Engineering

When a liquid of density 1200 kg/m3 and viscosity 0.01 kg m^-1s^-1 flows through a 1 cm Diameter pipe at 0.2 m/s, the flow is referred as a