Four terms and statements related to gene regulatlon Match the correct term to each of the four statements: Regulatory molecule that binds to operator region in DNA. 1. repressor Regulatory molecule that must be present at a site in DNA (such as promoter) so that transcription occurs. 2. Constitutive 3. Effector Small molecules that bind to regulatory molecule, such as repressor. 4. Activator Phenotype of I* oCz+

Four terms and statements related to gene regulatlon Match the correct term to each of the four statements: Regulatory molecule that binds to operator region in DNA. 1. repressor Regulatory molecule that must be present at a site in DNA (such as promoter) so that transcription occurs. 2. Constitutive 3. Effector Small molecules that bind to regulatory molecule, such as repressor. 4. Activator Phenotype of I* oCz+

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter14: Gene Regulation

Section: Chapter Questions

Problem 6TYU

See similar textbooks

Similar questions

Which of the following statements is/are true about gene regulation in bacteria? Choose all that could apply Multiple answer apply A genes with related functions are often grouped together and are transcribed into a single piece of RNA B small molecules act as sensors and bind DNA to change its 3D shape C enhancers are commonly used to regulate transcription D repressor proteins block transcription by binding to operator sequences E activator proteins bind near promoters and increase the efficiency of transcription
Which of the following is characteristic of genes and gene regulation in both bacteria and eukaryotes? (a) promoters (b) non-coding DNA within coding sequences (c) enhancers (d) operons (e) DNA located in a nucleus
Mechanisms that govern gene expression do not operate during _______. a. transcription c. translation b. RNA processing d. knockouts
Which of the following is least related to the other items? Group of answer choices inducer repressor operator enhancers 2. A scientist observing a cell during gene expression would be able to easily distinguish it as a prokaryotic cell by which of the following observations? Group of answer choices as soon as the DNA introns are removed from the template after the 5' caps are converted to mRNA after a transcription initiation complex has been formed during transcription once the pre-mRNA has been converted to mRNA
The following diagram describes the mRNA sequenceof part of the A gene and the beginning of the B geneof phage ϕX174. In this phage, some genes are read inoverlapping reading frames. For example, the code forthe A gene is used for part of the B gene, but the readingframe is displaced by one base. Shown here is the singlemRNA with the codons for proteins A and B indicated.aa# 5 6 7 8 9 10 11 12 13 14 15 16A AlaLysGluTrpAsnAsnSerLeuLysThrLysLeumRNA GCUAAAGAAUGGAACAACUCACUAAAAACCAAGCUGB MetGluGlnLeuThrLysAsnGlnAlaaa# 1 2 3 4 5 6 7 8 9Given the following amino acid (aa) changes, indicatethe base change that occurred in the mRNA and theconsequences for the other protein sequence.a. Asn at position 10 in protein A is changed to Tyr.b. Leu at position 12 in protein A is changed to Pro.c. Gln at position 8 in protein B is changed to Leu.d. The occurrence of overlapping reading frames isvery rare in nature. When it does occur, the extentof the overlap is…
The following diagram depicts the elements at the: Ac TTC g99 Ea cgcc tata an! ATT BRE TATA box Inr DPE (TBP) TFIIB TEIID Promoter Enhancer O transcribed gene O Silencer
Shown below is an eukaryotic gene. Assuming normal wild type RNA processing in a.cell, which of the following mature MRNAS could result in normal levels of functional synthesized proteins? Select all that apply Direction of transcription Promoter Template strand 5' Exon 4 Intron 3 Exon 3 Intron 2 Exon 2 Intron 1 Exon 1 3' 5' Coding strand Transcription start Transcription start 5' CAP-Exon1-Exon3-Exon4-AA..AAAA 5' CAP-Exon1-Exon2-Exon3-Exon4-AA...AAAA 5' CAP-Exon1-Exon2-Exon3-Exon4 Exon1-Exon2-Exon3-Exon4-.....AAAA
e table below with the word that matches the definition in the right column. regulatory proteins (transcription factors) that speed up transcription by helping RNA polymerase bind to a promoter DNA sequences that indicate where transcription of a gene by RNA polymerase begins-typically located upstream from the 5C end Proteins bound to DNA that affect when and how fast a gene is transcribed These factors slow down/shut off transcription either by preventing access to promoters or by keeping RNA polymerase from moving along the DNA strand 3 Regulatory DNA sequénces located upstream or downstream from an associated gene that enhance the transcription rate of that gene when bound to specific proteins 3A sequence of DNA that when bound to a transcription factor blocks the inappropriate effect of an enhancer on a neighboring gene
Part A Which of the following could be used to turn on a regulon (composed of multiple genes and operons) in a bacterium? There are multiple correct answers. You must select all correct options1 O use riboswitches that all respond to the same molecule O activate an alternative RNA polymerase mutate (change) a promoter sequence V activate an alternative sigma factor O specifically degrade one kind of repressor protein Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining
Escherichia coli is grown in the presence of 20 mg of glucose and 20mg of lactose as carbon sources. The major carbon source is consumed by Escherichia at a rate of 10 mg/hour. Which of the following best describes the actions of RNA polymerase, the promoter and the sugar being used after 3 hours? O The sugar binds to the repressor, inactivating it, allowing RNA polymerase to bind to the operator. O RNA polymerase binds to the promoter and the sugar binds to the operator. O The sugar binds to the repressor, inactivating it, and allows RNA polymerase to bind to the promoter. O The sugar binds to RNA polymerase and the repressor binds to a structural gene. Question 41 A Moving to the next question prevents changes to this answer. 61
Which of the following functions are characteristic of general transcription factors in eukaryotes? Hint: there may be more than one correct response. Be sure to check all that apply. They inhibit RNA polymerase binding to the promoter and begin transcribing. They bind to other proteins or to the TATA box. They are sufficient to allow high levels of transcription. O They initiate and regulate the transcription of genes. O They bind to sequences just after the start site of transcription.
Consider gene expression in a prokaryotic or bacterial cell. Which of the following is true for transcription in this cell? Select all that apply. During Transcription, the enzyme topoisomerase relaxes negative supercoiling in the DNA strands MRNA can be synthesized by Transcription and at the same time this mRNA can be used for protein synthesis or Translation MRNA has to be processed before leaving the nucleus RNA polymerase requires sigma factor for efficient transcription initiation