If a gene has a Negative regulator, RNA pol will... O Translate the gene in a higher rate Translate the gene in a lower rate Transcribe the gene in a higher rate Transcribe the gene in a lower rate
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- . In the tryptophan operon of E. coli, what happens when tryptophan levels get too high? tryptophan is removed from its co-repressor, causing it to detach from the operator tryptophan is removed from its co-repressor, causing it to attach to the operator tryptophan is bound to its co-repressor, causing it to detach from the operator tryptophan is bound to its co-repressor, causing it to attach to the operator all of the above occur at equal rates when tryptophan levels get too highBy means of a flowchart, show the possible jumps that a transposoncan make. Show the involvement of viruses in its movement.Explain how the Pyrococcus furiosus TrmBL1 transcriptionregulator is able to act as both an activator and a repressor.
- Which of the following would you expect to happen if there were a mutation in the Iron Response Element (IRE) that prevented IRE-binding proteins from binding to the IRE. The transferrin mRNA will be degraded, regardless of iron concentration The transferrin mRNA will not be degraded, regardless of iron concentration The transferrin mRNA will only be degraded with low iron concentration The transferrin mRNA will only be degraded with high iron concentrationDiscuss any 1 gene regulation mechanism. Describe the gene expression in this type of gene regulation. Use 3-4 sentences only.The trp operon is: **(for additional information review the CogBooks Module, answer explained on CogBooks): In the absence of tryptophan, the trp repressor dissociates from the operator, and RNA synthesis proceeds. promoter operator trpE| trpD trpC trpB trpA RNA polymerase repressor When tryptophan is present, the trp repressor binds the operator, and RNA synthesis is blocked. promoter operator trpE trpD trpC trpB trpA RNA polymerase; repressor tryptophan Both negative inducible and positive repressible Positive inducible Negative Repressible O Negative inducible
- 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 > >Which of the following would be used to describe a gene that is transcriptionally controlled by activator ahd/or repressor proteins? Constitutive Regulated Environmental-independent. Permanently repressed. Permanently enhanced. Moving to another question will save this response. 144 Hz ms CURVED Optix MAG271C CAMING Firameless Desgn Gomine Os0 APP msi High Rofresh Rate Fast Respense Time Curved Gaming. One mechanism by which antisense RNAs act as negative regulators of gene expression is by base pairingwith the ribosome binding site on the sense mRNA toblock translation. In a second, alternative mechanism,the act of transcribing an antisense RNA can somehow prevent RNA polymerase from recognizing thesense promoter for the same gene. Design an experimental approach that would enable you to distinguishbetween these two modes of action at a specific gene.(Hint: What would be the outcome in each case ifhigh levels of the antisense RNA were transcribedfrom a gene on a plasmid?)
- In the RNAi response: Group of answer choices Dicer produces siRNA from the trigger molecule. These become part of a RISC complex. The RISC complex contains Argonaute and siRNA. It is this complex that cuts up the mRNA. Dicer production triggers from the siRNA molecule. These become part of a RISC complex. The RISC complex contains RdRP and a siRNA. It is this complex that cuts up the mRNA. RISC produces siRNA from the trigger molecule. These. What is the role of catabolite activator protein (CAP) in the lactose operon of E. coli? it prevents RNA polymerase from binding to the promoter when lactose levels are high it assists RNA polymerase in binding to the promoter when glucose levels are high it prevents RNA polymerase from binding to the promoter when glucose levels are low it assists RNA polymerase in binding to the promoter when glucose levels are low it prevents RNA polymerase from binding to the promoter when lactose levels are lowa. Use circles for activators and squares for repressors. Draw the shapes bound to each promoter region. b. Under the word gene write “ON” or “OFF” to indicate if the gene is transcribed or not under the different conditions.