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TLS Online TPP Program

#Question id: 4322

If a particular operon encodes enzymes for making an essential amino acid and is regulated like the trp operon, then

#Part-A Aptitude & General Biotechnology

  1. the amino acid inactivates the repressor.

  2. the repressor is active in the absence of the amino acid.

  3. the amino acid acts as a corepressor.

  4. the amino acid turns on transcription of the operon.

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TLS Online TPP Program

#Question id: 3269

#Part-A Aptitude & General Biotechnology

Two plant species live in the same biome but on different continents. Although the two species are not at all closely related, they may appear quite similar as a result of
TLS Online TPP Program

#Question id: 12584

#Part-B Specialized Branches in Biotechnology

Which of the following causes excessively high levels of toxic chemicals in fish-eating birds? 
TLS Online TPP Program

#Question id: 2962

#Part-B Specialized Branches in Biotechnology

Which of the following experimental observations (some real, some contrived) would not be consistent with our current understanding of cytokinesis?
TLS Online TPP Program

#Question id: 10880

#Part-B Specialized Branches in Biotechnology

Which marine zone would have the lowest rates of primary productivity (photosynthesis)?
TLS Online TPP Program

#Question id: 11871

#Part-A Aptitude & General Biotechnology

The bells begin to toll together and they toll respectively at intervals of 6, 7, 8, 9 and 12 seconds. After how many seconds will they toll together again?