A genetically-engineered strain of yeast is cultured in a bioreactor at 30⁰C for production of heterologous protein. The oxygen requirement is 80 mmol 1-1 h-I; the critical oxygen concentration is 0.004 mM. The solubility of oxygen in the fermentation broth is estimated to be 10% lower than in water due to solute effects. What mass-transfer coefficient is required if pure oxygen is used instead of air?                       

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#Question id: 1655

#Section 2: General Biology

IgA in seromucus secretions:

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#Question id: 14419

#Section 5: Bioprocess Engineering and Process Biotechnology

 The equation for Del factor is  

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#Question id: 4129

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following statements about the tRNA that normally accepts phenylalanine is false?  (mRNA codons for phenylalanine are UUU and UUC.)

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#Question id: 14865

#Section 1: Engineering Mathematics

is equal to

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#Question id: 4822

#Section 3: Genetics, Cellular and Molecular Biology

In a particular species of mammal black hair (B) is dominant to green hair (b) and red eyes (R) are dominant to white eyes (r). If a BbRr individual is mated with a bbrrindividual the expected phenotypic ratio of the offspring is 1 black-red : 1 black-white: 1 green-red : 1 green-white. However, when you mate these individuals you find that the phenotypic ratio of the offspring is 6 black-red :1 black-white : 1 green-red : 6 green-white. What could account for this difference?