Both prokaryotes and eukaryotes have several types of pre and post-transcriptional regulation. What advantage does pre-transcriptional regulation have over post-transcriptional regulation and vice versa? Name three examples of each type of regulation
What will be an ideal response?
Pre-transcriptional regulation is very useful to the cell because it can save the cell a lot of energy and additional resources (for example RNA nucleotides) by stopping transcription before it even starts. Although post-transcriptional regulation will have already used some of the cell's energy and resources, its major advantage is that the cell will be able to respond faster to environmental changes. Examples of pre-transcriptional regulation include: operons, quorum sensing, epigenetic control (such as DNA methylation), and recruitment of transcription factors. Examples of post-transcriptional regulation include: recruiting ribosomes to mRNA, controlling mRNA stability, small noncoding RNAs, riboswitches, and eukaryotes can control RNA processing and nuclear export.
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a. true b. false
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