Other questions in this quiz

2. Which statement is correct?

  • One transcription factor can activate and/or repress more than one gene
  • Most genes are initially active
  • The transcription initiation complex forms when DNA polymerase binds to a promotor region
  • Transcription can only be regulated by intrinsic factors

3. What transcription factor controls muscle development?

  • MyoD
  • Bicoid
  • Myotome
  • MBP

4. Which is not true about MyoD?

  • Part of the helix-loop-helix family
  • Maintains a positive feedback loop
  • Expressed in all cells
  • Is not involved in muscle contraction

5. What is a morphogen?

  • A chemical which forms a concentration gradient
  • A chemical produced throughout a cell
  • A chemical which causes mutations
  • A molecule which is sensed by cell-surface receptors

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