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TLS Online TPP Program

#Question id: 15014

  is equal to 

#Section 1: Engineering Mathematics
  1. a3 - b3 
  2. a3 + b3
  3. (a3 - b3)2
  4. (a3 + b3)2 
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TLS Online TPP Program

#Question id: 14434

#Section 5: Bioprocess Engineering and Process Biotechnology

the centrifugal separation of biomass of 80um sized cells of density 1.04kgm-3 was carried out in a tubular centrifuge having a diameter of 15cm and rotating at 1200 rev/min. the axis of rotation was 0.8cm, the liquid viscosity was 1.0kgm-3 and 0.013 gcm-ls-1 respectively. centrifuge length is 40cm, what will be the time required for centrifuging 1000 litres of broth? 
TLS Online TPP Program

#Question id: 14247

#Section 5: Bioprocess Engineering and Process Biotechnology

A steam steriliser is used to sterilise liquid medium for fermentation. The initial concentration of contaminating organisms is 108 per litre. For design purposes, the final acceptable level of contamination is usually taken to be 10-3cells; this corresponds to a risk that one batch in a thousand will remain contaminated even after the sterilisation process is complete. For how long should 1 m3 medium be treated if the temperature is 121⁰C ________________.

 To be safe, assume that the contaminants present are spores of Bacillus stearothermophilus, one of the most heat-resistant microorganisms known. For these spores the activation energy for thermal death is 283 kJ gmo1-1 and the Arrhenius constant is 1036.2 s-1

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#Question id: 2104

#Section 3: Genetics, Cellular and Molecular Biology

Peripheral membrane proteins:
TLS Online TPP Program

#Question id: 1977

#Section 2: General Biology

A patient can produce antibodies against some bacterial pathogens, but he does not produce antibodies against viral infections. This is probably due to a disorder in which cells of the immune system?
TLS Online TPP Program

#Question id: 14443

#Section 1: Engineering Mathematics

 If A = and B = , then find (AB)^-1