[Campbell Biology P.419] Based on Figure 18.6, which of the following stages are key points ... | Practice Question

Based on Figure 18.6, which of the following stages are key points for regulating gene expression in eukaryotic cells?

  • A: Chromatin modification (DNA unpacking)
  • B: RNA processing
  • C: Degradation of mRNA
  • D: Polypeptide folding
  • E: Transcription

Explanation

Figure 18.6 highlights several stages of gene expression that can be regulated in eukaryotic cells. These include 'Chromatin modification: DNA unpacking' a, affecting DNA , 'Transcription' e, affecting RNA synthesis , 'RNA processing' b, affecting mRNA maturation , 'Degradation of mRNA' c, affecting mRNA stability , 'Translation' affecting polypeptide synthesis , 'Protein processing' affecting active protein formation , and 'Degradation of protein' affecting protein stability . Polypeptide folding d is a component of protein processing, but the diagram specifically emphasizes the broader 'Protein processing' as a regulatory step, not the folding as a separate primary control point.