A 15-m ³ chemostat is operated with dilution rate 0.1 h^-1. A continuous steriliser with steam injection and flash cooling delivers sterilized medium to the fermenter. Medium in the holding section of the steriliser is maintained at 130⁰C The concentration of contaminants in the raw medium is 10⁵ ml^-l; an acceptable contamination risk is one organism every 3 months. The Arrhenius constant and activation energy for thermal death are estimated to be 7.5 × 10³⁹ h^-1 and 288.5 kJ gmol^{- 1}, respectively. The steriliser pipe inner diameter is 12 cm. At 130⁰C the liquid density is 1000 kg m^{- 3} and the viscosity is 4 kg m^{- 1} h^{- 1}. Assuming perfect plug flow, determine the length of the holding section.   __________________

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#Question id: 848

#SCPH01 Biochemistry

Which of the brain diseases is not caused by the misfolding of brain proteins in mammals

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#Question id: 848

#SCPH05 I Biotechnology

Which of the brain diseases is not caused by the misfolding of brain proteins in mammals

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#Question id: 848

#SCPH06 I Botany

Which of the brain diseases is not caused by the misfolding of brain proteins in mammals

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#Question id: 849

#SCPH05 I Biotechnology

The rigidity of the peptide unit and the restricted set of allowed phi and psi angles limits the number of structures accessible to the unfolded form sufficiently to allow:-

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#Question id: 849

#SCPH06 I Botany

The rigidity of the peptide unit and the restricted set of allowed phi and psi angles limits the number of structures accessible to the unfolded form sufficiently to allow:-

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#Question id: 850

#SCPH05 I Biotechnology

The experimental inverse of protein structure prediction, has provided insights into protein folding and stability. Protein design attempts to construct an amino acid sequence that will form a structure such as a sandwich of β sheets or a bundle of α helices;