Cell Biology and Micro-biology

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1. In a eukaryotic cell, which of the following statements best describes the arrangment of nuclear genes?

  • monocistronic
  • polycistronic
  • multigenic
  • operon-based
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2. the process by which mRNA is synthesised in cells is termed

  • transcription
  • translation
  • tranphosphorylation
  • transconjugation

3. Which of the following cells would you expect to have the thinnest layer of peptidoglycan in their cell wall?

  • A mammalian cell
  • A gram positive bacterial cell
  • A gram negative bacterial cell
  • A yeast cell

4. Which sequence would be the mRNA transcript generated from the following non-template DNA strand 5' TTTTTAAATCCT 3'

  • 5' UUUUUAAAUCCU 3'
  • 3' TTTTTAAATCCT 5'
  • 3' UUUUUAAAUCCU 5'
  • 5' AAAAATTTAGGA 3'

5. Peptidoglycan, the main structural constitute of the bacterial cell wall, is made from

  • Sugars and lipids
  • Amino acids and nucleic acids
  • Sugars and amino acids
  • Amino acids and lipids

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