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TLS Online TPP Program
#Question id: 13062
#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.
A restriction enzyme cleaves a circular plasmid vector to produce fragments : 1kb, 0.3kb, 2kb, 1kb and 0.3kb. How many bands will be visible on agarose gel?
TLS Online TPP Program
#Question id: 5817
#Unit 8. Inheritance Biology
Why is alkyltransferase only able to be used once?
TLS Online TPP Program
#Question id: 20260
#Unit 12. Applied Biology
The modified forms of starch have varied applications in food and other industries. Basic strategies to modify starch quality are
(i) genetic modification of crops (by breeding or biotechnology)
(ii) food processing (using enzymes and chemicals)
(iii) food supplementation (modification of starch by employing microorganisms)
Which of the following strategies are correct?
TLS Online TPP Program
#Question id: 5194
#General Aptitude
A group of n students are numbered continuously from the first student as 1, 2, 3,…if 1101 digit had to be used in all, what is the number of students in the group?
TLS Online TPP Program
#Question id: 4233
#Unit 3. Fundamental Processes
A particular triplet of bases in the coding sequence of DNA is AAA. The anticodon on the tRNA that binds the mRNA codon is __.