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TLS Online TPP Program

#Question id: 16318

Situational Stress:

#Unit 7. System Physiology – Animal
  1. Random and unpredictable (hurricanes, accidents)
  2. Can be a threat to health
  3. Arise from life events (Associated with work, personal relationships)
  4. Beneficial or good stress
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TLS Online TPP Program

#Question id: 5421

#General Aptitude

A car owner buys petrol at Rs.75, Rs.80 and Rs.85 per litre for three successive years. What is the average cost per litre of petrol if he spends Rs.4000 each year?
TLS Online TPP Program

#Question id: 2930

#Unit 2. Cellular Organization

The S. cerevisiae homolog of Xenopus MPF is:
TLS Online TPP Program

#Question id: 933

#Unit 1. Molecules and their Interaction Relevant to Biology

Industrially, nitrogen for use in fertilizers is converted to ammonia by ________.
TLS Online TPP Program

#Question id: 13131

#Unit 10. Ecological Principles

Biologists performed an experiment with flies to examine the effects of population size on the maintenance of genetic variation  and  on  egg-to-adult survival.  From  a  large  source  population, they  randomly  assigned  eggs  to  three experimental  populations  of  size  N,  equal  to  20,  60,  and0100.  For  later  generations,  they  collected  N  eggs  from each  population  and  moved  them  into  identical  vials  that  co0ntained  f2re0sh  me4d0ium.  Th6e0y  coun8te0d  the  number  of adult flies that emerged and used tissue samples from the adults for genetic analyses. Genetic variation was measured by  scoring  alleles  at  several  polymorphic  loci  and  expressed  as  the  average  number  of  alleles  at  those  loci.  The results are summarized in Figure 1 and Figure 2 below.


The numbers of adult flies that emerged from the three populations in the first generation are closest to which of the following?
TLS Online TPP Program

#Question id: 13060

#Unit 13. Methods in Biology

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.
In blue white screening insertional activation of Beta-D-galactosidase will give rise to