TLS Online TPP Program

#Question id: 8685


Which of the following would be most useful in creating a phylogenetic tree of a taxon?

#I Life Science/ Life Sciences Group – I-V
  1. morphological data from fossil and living species
  2. a knowledge of color patterns in fossil and living species
  3. a knowledge of mutation rates in modern species
  4. morphological data from fossil species
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TLS Online TPP Program

#Question id: 15228

#SCPH01 Biochemistry

Capillary electrophoresis (CE) is based on principle of 

TLS Online TPP Program

#Question id: 13064

#SCPH05 I 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: 1784

#SCPH01 Biochemistry

which parts are similar among the three pathways

TLS Online TPP Program

#Question id: 2288

#I Life Science/ Life Sciences Group – I-V

Proteins lacking a signal peptide sequence will probably found in

TLS Online TPP Program

#Question id: 8287

#SCPH06 I Botany

The following phylogeny shows six living species (a-f) and five ancestral (now extinct) species (#1-5). If the phylogeny had been developed on the basis of similarities in bone structure, which of the following predictions would you make in terms of the structure of a particular enzyme?