試題詳解

36. Which of the flowing descriptions about transcriptional control of gene expression are CORRECT?
(A) Gene expression in both prokaryotes and eukaryotes is regulated primarily by mechanisms that control the initiation of transcription.
(B) The primary purpose of gene control in multicellular organisms is the execution of precise developmental decisions so that the proper genes are expressed in the proper cells.
(C) Enhancers direct binding of RNA polymerase II to DNA, determine the site of transcription initiation, and influence transcription rate.
(D) The activity of many transcription factors are indirectly regulated by binding of extracellular proteins and peptides to cell-surface receptors.
(E) Epigenetic control of transcription refers to repression or activation that is maintained after cells replicate as the result of DNA methylation or post-translational modification of histones.