How long will it take for the initial concentration of A to fall from 0.20 M to 0.075, if the rate constant for a reaction of zero-order in A is 0.035 mol L^–1 s^–1.

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#Question id: 3327

#Section 3: Genetics, Cellular and Molecular Biology

Birds that are brood parasites lay eggs in the nests of other birds. This is a successful strategy for the parasite only if

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#Question id: 3273

#Section 3: Genetics, Cellular and Molecular Biology

The number of forward mutations is equal to the number of reverse mutations then

a) Population is in equilibrium for forward and reverse mutation rates

b) The population is being in Hardy–Weinberg equilibrium

c) No further change in allelic frequency

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#Question id: 14933

#Section 5: Bioprocess Engineering and Process Biotechnology

E. coli was continuously cultured in a continuous stirred tank fermenter with a working volume of 1.0 I by chemostat. A medium containing 4.0 g1^-1 of glucose as a carbon source was fed to the fermenter at a constant flow rate of 0.5 I h^-1, and the glucose concentration in the output stream was 0.20 g1^-1, The cell yield with respect to glucose YxS was 0.42 g dry cells per gram glucose. Determine the cell concentration in the output stream 

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#Question id: 2017

#Section 2: General Biology

Which of the following could prevent the appearance of the symptoms of an allergy attack?

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#Question id: 1599

#Section 2: General Biology

Name the class of MHC which is recognized by CD4 TH cell.