Practice Questions

TLS Online TPP Program

#Question id: 3294

Which one of these processes describes bottleneck effect?

#Unit 11. Evolution and Behavior

Chance events that change allele frequency
alleles transferred to the next generation in portions that differ from previous generation
transfer of alleles in and out of a population due to movement of fertile individuals
sudden change in environments that alters gene frequency of a populationa

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TLS Online TPP Program

#Question id: 24251

#Unit 2. Cellular Organization

Which of the following does not contain HFD

TLS Online TPP Program

#Question id: 11977

#Unit 7. System Physiology – Animal

Which of the following would be associated with parallel changes in aldosterone and cortisol secretion?

TLS Online TPP Program

#Question id: 10944

#Unit 7. System Physiology – Animal

Where does the transmigration of WBCs occur in response to infectious agents?

TLS Online TPP Program

#Question id: 33692

#Unit 2. Cellular Organization

Gene families with the highest number of pseudogenes are

A. Olfactory Receptor (OR)

B. Immunoglobulin (Ig)

C. Zinc Finger Protein (ZNF)

D. Globin gene family

TLS Online TPP Program

#Question id: 13063

#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.

Which of the statement is worng? Aminopetrin………s