Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 29720
TLS Online TPP Program

#Question id: 3868

The sigma factor of E. coli RNA polymerase: 

#Unit 3. Fundamental Processes

  1. associates with the promoter before binding core enzyme.

  2. combines with the core enzyme to confer specific binding to a promoter.

  3. is inseparable from the core enzyme.

  4. is required for termination of an RNA chain.

More Questions
TLS Online TPP Program

#Question id: 9256

#Unit 9. Diversity of Life Forms

Which of the following areas of study focuses on the exchange of energy, organisms, and materials between ecosystems?
TLS Online TPP Program

#Question id: 9257

#Unit 9. Diversity of Life Forms

Which lake zone would be absent in a very shallow lake?
TLS Online TPP Program

#Question id: 9258

#Unit 9. Diversity of Life Forms

Which of the following is characteristic of most terrestrial biomes?
TLS Online TPP Program

#Question id: 9259

#Unit 9. Diversity of Life Forms

The oceans affect the biosphere in all of the following ways except
TLS Online TPP Program

#Question id: 9261

#Unit 9. Diversity of Life Forms

Which of the following statements about horizontal gene transfer is accurate?
TLS Online TPP Program

#Question id: 9262

#Unit 9. Diversity of Life Forms

The kingdom Monera was dismantled because of which of the following reasons?