TLS Online TPP Program

#Question id: 4140


Which of the following statements about bacterial mRNA is true?

#Section 3: Genetics, Cellular and Molecular Biology
  1. A ribosome usually initiates translation near the end of the mRNA that is synthesized last.

  2. An mRNA is never degraded but is passed on to the daughter cells at cell division.

  3. During polypeptide synthesis, ribosomes move along the mRNA in the direction 5'  3'.

  4. Ribosomes cannot initiate internally in a polycistronic transcript.

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TLS Online TPP Program

#Question id: 27191

#Section 5: Bioprocess Engineering and Process Biotechnology

The half-life of a zero order reaction is 30 minutes. What is the concentration of the reactant left after 60 minutes?

TLS Online TPP Program

#Question id: 13065

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

Precision will be reduced, but yield will be increased
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.
Agglutination of antigens by utilising specific antibodies can only occur, if

TLS Online TPP Program

#Question id: 16821

#Section 1: Engineering Mathematics

Y''-6Y'+ 25Y = 0
y(0) = 2, y' (0) = -1 find the limit as t 

TLS Online TPP Program

#Question id: 21737

#Section 5: Bioprocess Engineering and Process Biotechnology

Which of the following factors can change the rate of a zero-order reaction?

TLS Online TPP Program

#Question id: 19142

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

Which among the following are secondary biological databases 
(1) DDBJ                     (2) EMBL
(3) Pfam                      (4) Profiles
(5) SCOP