Match each of the following descriptions to the type of regulatory RNA affecting a "target" gene (aka, the gene the regulatory RNA is regulating). Use each answer once. This regulatory RNA may increase siRNA transcription of the target gene by recruiting activator proteins. secondary structures on RNA can become... IncRNA these regulatory RNAs regulate gene miRNA expression post transcriptionally generally by binding to the 3'-UTR regions of their target RNAs > >

You are studying how gene expression is regulated in the cell. For gene z, you find that while there are high levels of mRNA in the cell, there are low levels of the protein encoded by gene z. Describe a regulatory mechanism that could explain this finding that occurs after translation.

a. How do bacteria increase the efficiency of gene expression? Is this possible in eukaryotes? b. A mutation in the promoter of Gene K disrupts an enzyme binding site and results in the loss of Gene K expression. Is this change in gene expression likely happening at the transcriptional or the translational level? Explain. c. Propose three different mutations to prevent initiation, elongation, and termination of bacterial transcription, respectively. Explain how/why each mutation would prevent its respective step. (Hint: mutations can be in genes that encode proteins or regulatory DNA sequences)

MRNAs and eukaryotic cells receive different modifications than those in prokaryotic cells, because eukaryotic mRNAs must be able to accomplish different things. Which of the following describes events that are necessary for an mRNA to be expressed in a eukaryotic cell, but are not necessary for mRNAs in a prokaryotic cell? select all that apply A) introns must be removed from the eukaryotic mRNA B) The mRNA must leave from the nucleus C) transcription factors must bind to the mRNA in a eukaryotic cell after it is transcribed D) A ribsome must bind to the mRNA .