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TLS Online TPP Program

#Question id: 4331

In eukaryotic cells, transcription cannot begin until

#Unit 3. Fundamental Processes

  1. the two DNA strands have completely separated and exposed the promoter.

  2. several transcription factors have bound to the promoter.

  3. the 5 caps are removed from the mRNA.

  4. the DNA introns are removed from the template.

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TLS Online TPP Program

#Question id: 11407

#Unit 10. Ecological Principles

Which of the following is incorrect statement?
TLS Online TPP Program

#Question id: 5006

#Unit 11. Evolution and Behavior

The oxygen revolution changed Earthʹs environment dramatically. Which of the following adaptations took advantage of the presence of free oxygen in the oceans and atmosphere?
TLS Online TPP Program

#Question id: 3922

#Unit 3. Fundamental Processes

The σ70 subunit in E. coli RNA polymerase acts as a/an __.
TLS Online TPP Program

#Question id: 17806

#Unit 9. Diversity of Life Forms

Which of the following is not a characteristic that distinguishes gymnosperms and angiosperms from other plants? 
TLS Online TPP Program

#Question id: 2751

#Unit 2. Cellular Organization

Adenovirus is a useful model of studying gene expression because __________