Practice Questions

TLS Online TPP Program

#Question id: 4249

Which of the following statements is true about protein synthesis in prokaryotes?

#Unit 3. Fundamental Processes

Extensive RNA processing is required before prokaryotic transcripts can be translated.
Translation can begin while transcription is still in progress.
Prokaryotic cells have complicated mechanisms for targeting proteins to the appropriate cellular organelles.
Unlike eukaryotes, prokaryotes require no initiation or elongation factors.

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TLS Online TPP Program

#Question id: 13055

#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 following will provide least specific amplification in qPCR?

TLS Online TPP Program

#Question id: 4527

#Unit 3. Fundamental Processes

The Mediator complex

TLS Online TPP Program

#Question id: 28269

#Unit 5. Developmental Biology

Sperm-specific calcium channels are encoded by which gene?

TLS Online TPP Program

#Question id: 19046

#Unit 13. Methods in Biology

Which of the following techniques is used to study the three-dimensional structure of a molecule?

TLS Online TPP Program

#Question id: 10578

#Unit 10. Ecological Principles

The population of annual breeder growing at a rate of 10% per year. Initial population size is 1200. After 3 years population size would be