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TLS Online TPP Program

#Question id: 15168

Cyanobacteria comprises a large and morphologically heterogenous group of

#Section 6: Plant, Animal and Microbial Biotechnology
  1. Chemoautotroph
  2. Photoheterotroph
  3. Photoautotroph
  4. Chemoheterotroph
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TLS Online TPP Program

#Question id: 14402

#Section 5: Bioprocess Engineering and Process Biotechnology

Baby hamster kidney cells are immobilised in alginate beads. The average particle diameter is 5 mm. Rate of oxygen consumption at a bulk concentration of 8 x 10 ^-3 kg 0 2 m ^-3 is 8.4 x 10 ^-5 kg s^- 1 m^-3 catalyst. The effective diffusivity of oxygen in the beads is 1.88 x 10^ -9 m 2 s^- 1. Assume that the oxygen concentration at the surface of the catalyst is equal to the bulk concentration, and that oxygen uptake follows zero-order kinetics. calculate the observable Thiele modulus. 
TLS Online TPP Program

#Question id: 13064

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Optimisation of a PCR reaction is often a compromise between the competing demands for precision, efficiency and yield. Although the specific effects may vary, generally, increasing the annealing temperature will increase non-specific primer binding and reduce precision. Increasing the length of the elongation phase will reduce the proportion of incomplete newly-synthesised strands and therefore increase yield. In this case, the potential effect on efficiency is unclear. Increasing the elongation phase would increase the reaction time, but the time taken to ramp down to a lower annealing temperature would be reduced.
Which of the following techniques doesn’t involve use of a secondary antibody?
TLS Online TPP Program

#Question id: 1155

#Section 3: Genetics, Cellular and Molecular Biology

The activity of beta-adrenergic receptors is regulated by:
TLS Online TPP Program

#Question id: 19141

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Which substitution matrix should you prefer to find distantly related orthologs
TLS Online TPP Program

#Question id: 10790

#Section 6: Plant, Animal and Microbial Biotechnology

chalcone synthase (CHS) involved in biosynthesis of phenolic compound in plants. Following are some statements regarding the action of CHS;

 a) Chalcone synthase catalyzes the conversion of p-Coumaroyl-CoA into Chalcones

 b) Substrate for Chalcone synthase is chalcone

 c) CHS activity increased by environmental factors, such as light, and fungal infection

 d) Chalcone synthase is enzyme in flavonoid biosynthesis catalyzes stepwise condensation into p-Coumaric acid by using Malonyl-CoA molecules

 Which of the following combinations of above statement is true?