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TLS Online TPP Program

#Question id: 4018

How does binding of the lac repressor to the lac operator block transcription initiation?

#Unit 3. Fundamental Processes

  1. lac repressor binding blocks RNA polymerase from interacting with DNA at the start site.

  2. lac repressor binding induces a DNase that cleaves the DNA at the transcription start site.

  3. lac repressor binding causes a conformational change in RNA polymerase.

  4. lac repressor binding induces a protease that degrades the sigma subunit of RNA polymerase.

More Questions
TLS Online TPP Program

#Question id: 30073

#Unit 7. System Physiology – Animal

Following graph represents volume and pressure in ventricles. According to graph which of the following events correctly represents A & B  respectively?
TLS Online TPP Program

#Question id: 28388

#Unit 5. Developmental Biology

Which of the following event is not seen during amphibian gastrulation development?
TLS Online TPP Program

#Question id: 11463

#Unit 1. Molecules and their Interaction Relevant to Biology

If trypsin cleaved at Lys/Arg C-terminus, then total no. of fragment will be observed for given sequence
TLS Online TPP Program

#Question id: 1315

#Unit 4. Cell Communication and Cell Signaling

Which one of the following junctions play important role in metabolic coupling?
TLS Online TPP Program

#Question id: 31362

#Unit 6. System Physiology – Plant

Structural domains and motifs in the intracellular immune receptors in plants are made up of