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#Question id: 2649


Which operon behaves similar to Bacillus subtilis trp operon in terms of attenuation?

#Unit 2. Cellular Organization
  1. Lac operon

  2. His operon

  3. Phe operon

  4. Ara operon

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TLS Online TPP Program

#Question id: 4101

#Unit 3. Fundamental Processes

In order to ensure that only fully processed mature mRNAs are allowed to be exported to cytosol, pre-mRNAs associated with snRNPs are retained in the nucleus. To demonstrate this, an experiment was performed where a gene coding a pre-mRNA with a single intron was mutated either at the 5’ or 3’ splice sites or both the splice sites.

Given below are a few possible outcomes, Choose NOT FEASIBLE OUTCOME

A. Pre-mRNA having mutation at both the splice sites will be retained in the nucleus because of the presence of bound snRNPs.

B. Pre-mRNA having mutation at both the splice sites will be exported to cytosol because of the absence of bound snRNPs.

C. Pre-mRNA mutated at either 3’ or 5’ splice sites will be retained in the nucleus because of the presence of bound snRNPs.

D. Pre-mRNA mutated at either 3’ or 5’ splice sites will be exported to cytosol because of the absence of bound snRNPs.

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#Question id: 12315

#Unit 10. Ecological Principles

In the evolution of whelk- eating behavior in crows, which of the following did natural selection minimize? 

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#Question id: 3440

#Unit 11. Evolution and Behavior

Which of the following is least related to the others?

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#Question id: 11525

#Unit 6. System Physiology – Plant

Coleoptiles are very sensitive to light, especially

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#Question id: 18758

#Unit 13. Methods in Biology

Which polymerase is used in PCR based mutagenesis?