What is the composition of minimal initiation complex during transcription?TBP, TAF, TFIIA, TFIIB, TFIIFTEIIA, TFIIB, TEILF, RNA Pol |ITEIID, TFIIA, TEIIB, TFIIFTEIID, TFIIA, TFIIB, TFIIF, RNA Pol II

In eukaryotes several transcription factors are necessary for the basal expression of an eukaryotic…

Answered: What is the composition of minimal…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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1. Draw a diagram of the lac operon. PO I+P+O+Z+Y+ I+P+OcZ+Y- I-P+O+Z+Y+ Lab section (circle): lacz gene lac Y gene lacA gene I+P+O+ZY/IPO+Z+Y- 2. The promoter (P) is the start site of transcription through the binding of RNA polymerase before actual mRNA production. Mutated promoters (P) cannot bind RNA polymerase, so no mRNA is made. In the table below, make predictions about the expression of ß-galactosidase and permease for different partial diploid (F') genotypes. Do this for E. coli growth on two different types of media - one without lactose, and one with. Use a to mark where there is no enzyme produced, and a + to mark where the enzyme is made. The first genotype has all wild-type alleles, and has been filled in as an example. Genotype IPOCZ+Y/I-P+O+Z-Y+ ISP+O+Z+Y/I+P+O+Z*Y* CR 1:00 Lactose absent B-galactosidase Permease R 3:-00 + R 6:30 Lactose present B-galactosidase F 10:00 Permease
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For the lac operon, when glucose is absent and lactose is present ___________ None of the options cAMP-CAP is bound to the operator and the repressor is not bound to the promoter cAMP-CAP is not bound to the promoter and the repressor is bound to the operator cAMP-CAP is bound to the promoter and the repressor is not bound to the operator
An operon is a group of genes under the control of a single promoter. Match each type of operon with the descriptions. Inducible Sufficient amounts of the gene product inhibit further transcription. Transcription occurs regardless of environmental conditions. Repressible Answer Bank Constitutive Activating the repressor gene product inhibits transcription. Under default conditions, transcription is inhibited.
What is the correct order of events during transcription Group of answer choices a. Initiation, Elongation, Capping, Termination, Nucleotide Modification, Splicing, Editing, Polyadenylation b. Initiation, Capping, Elongation, Termination, Splicing, Nucleotide Modification, Editing, Polyadenylation c. Initiation, Capping, Elongation, Splicing, Editing, Nucleotide Modification, Polyadenylation, Termination d. Initiation, Elongation, Capping, Nucleotide Modification, Splicing, Editing, Termination, Polyadenylation
Complete the table below by choosing a term(s) in Column B that associates with the term in Column A. Column A Column B Associated terms Repressor Activator Repressor & Operator RNA polymerase Corepressor RNA polymerase & Operon Promoter Operon & CRP LacZ CRP & Inducer Allolactose Inducer & Tryptophan Operator Tryptophan & B-galactosidase CAMP B-galactosidase & CRP binding site
During termination, the release factor binds this site A site E site P site
What type of RNAi silencing targets DNA? What mechanism does this type of RNAi use? Group of answer choices siRNA; results in methylation of DNA miRNA; results in methylation of the DNA siRNA; results in degradation of DNA asRNA; results in degradation of the DNA asRNA; results in methylation of the DNA miRNA; results in degradation of the DNA
Which of the following accurately describes the function of HOTAIR? It is a long non-coding RNA that regulates transcription of target genes by recruiting the chromatin modification complexes LSD1 and PRC2 It is a scaffold RNA that brings crRNA and CAS9 proteins together for viral defense It is a miRNA that regulates the transcription of target genes by recruiting chromatin the chromatin modification complexes LSD1 and PRC2 It is an SIRNA that regulates the transcription of target genes by repressing their translation by targeting them for degradation It is a miRNA that regulates the transcription of target genes by repressing their translation It is an SIRNA that regulates the transcription of target genes by repressing their translation It is a miRNA that regulates the transcription of target genes by repressing their translation by targeting them for degradation
A mutation in which of the following would still allow RNA polymerase to bind to promoters but would prevent the formation of an open complex? Question 4 options: TFIIB Mediator TFIIH TFIID TBP
In eukaryotes, sequences that act as binding sites for proteins which alter the accessibility to RNA polymerases are called? Enhancers Promoters Silencers All of the above

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What is the composition of minimal initiation complex during transcription? TBP, TAF, TFIIA, TFIIB, TFIIF O TFIIA, TFIIB, TFIIF, RNA Pol II TEIID, TFIIA, TEIIB, TFIIF TEIID, TFIIA, TEIIB, TFIIF, RNA Pol II