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: 14119

#SCPH05 I Biotechnology

Which of the following is incorrect regarding sequence homology?

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#Question id: 98

#SCPH28 | Zoology

The elasticity and resistance to compression of connective tissue is due to

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#Question id: 4725

#SCPH28 | Zoology

Ptosis (droopy eyelid) may be inherited as a dominant human trait. Among 30 people who are heterozygous for the ptosis allele, 10 have ptosis and 20 have normal eyelids. What is the penetrance for ptosis?

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#Question id: 4344

#SCPH06 I Botany

How does the transcription of structural genes in an inducible operon occur?

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#Question id: 2070

#SCPH05 I Biotechnology

The sodium-potassium pump is called an electrogenic pump because it: