Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 16, Problem 13RQ
What will result from the binding of a transcription factor to an enhancer region?
- decreased transcription of an adjacent gene
- increased transcription of a distant gene
- alteration of the translation of an adjacent gene
- initiation of the recruitment of RNA polymerase
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When CAMP binds to the Catabolite Activator Protein (CAP), it causes a conformational change on the protein, which results in binding to the CAP-
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transcription activation; allosteric effect
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O O O O
Consider this list (below) of steps involved in transcription. These steps are out of order.
TRANSCRIPTION:
1. mRNA travels through a nuclear pore and enters the cytoplasm
2. the mRNA polymerase attaches at the start of a specific gene
3. RNA polymerase reads the gene surface4. a transcription factor bonds to a promoter site5. DNA molecule is unwound
6. a complimentary mRNA is produced
What is the correct order of this transcription?
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.
Chapter 16 Solutions
Biology 2e
Ch. 16 - Figure 16.5 In E. coli, the tip operon is on by...Ch. 16 - Figure 16.7 In females, one of the two X...Ch. 16 - Figure 16.13 An increase in phosphorylation levels...Ch. 16 - Control of gene expression in eukaryotic cells...Ch. 16 - Post-translational control refers to: regulation...Ch. 16 - How does the regulation of gene expression support...Ch. 16 - If glucose is absent, but so is lactose, the lac...Ch. 16 - Prokaryotic cells lack a nucleus. Therefore, the...Ch. 16 - The a/a operon is an inducible operon that...Ch. 16 - What are epigenetic modifications? the addition of...
Ch. 16 - Which of the following are true of epigenetic...Ch. 16 - The binding of _____ is required for transcription...Ch. 16 - What will result from the binding of a...Ch. 16 - A scientist compares the promoter regions of two...Ch. 16 - Which of the following are involved in post...Ch. 16 - Binding of an RNA binding protein will the...Ch. 16 - An unprocessed pre-mRNA has the following...Ch. 16 - IS. Alternative splicing has been estimated to...Ch. 16 - Post-translational modifications of proteins can...Ch. 16 - A scientist mutates elF-2 to eliminate its GTP...Ch. 16 - Cancer causing genes are called transformation...Ch. 16 - Targeted therapies are used in patients with a set...Ch. 16 - Name two differences between prokaryotic and...Ch. 16 - Describe how controlling gene expression will...Ch. 16 - Describe how transcription in prokaryotic cells...Ch. 16 - What is the difference between a repressible and...Ch. 16 - In cancer cells, alteration to epigenetic...Ch. 16 - A scientific study demonstrated that rat mothering...Ch. 16 - Some autoimmune diseases show a positive...Ch. 16 - A mutation within the promoter region can alter...Ch. 16 - What could happen if a cell had too much of an...Ch. 16 - A scientist identifies a potential transcription...Ch. 16 - Describe how RBPs can prevent miRNAs from...Ch. 16 - How can external stimuli alter...Ch. 16 - Protein modification can alter gene expression in...Ch. 16 - Alternative forms of a protein can be beneficial...Ch. 16 - Changes in epigenetic modifications alter the...Ch. 16 - A scientist discovers a virus encoding a Protein X...Ch. 16 - New drugs are being developed that decrease DNA...Ch. 16 - How can understanding the gene expression pattern...
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- Some drugs may reduce DNA methylation at the promoter of the reelin gene. What is the likely impact that this has on reelin expression? Group of answer choices: increased transcription decreased transcription no change in transcription, but decrease in translation no effect on transcription, but increase in translation altered pattern of DNA replicationarrow_forwardA particular mutation in the bacterial sigma factor allows this protein to bind RNA polymerase but prevents it from coming off (detaching) RNA polymerase once it binds. What specific effect will this mutation have on transcription? It will prevent the transcription termination exerted by the Rho protein. It will prevent the formation of closed complexes between RNA polymerase and the promoter. It will prevent the formation of open complexes between RNA polymerase and the promoter. It will prevent the transition from the transcription initiation to the transcription elongation stage. It will prevent the synthesis of abortive RNA transcripts while the RNA polymerase is bound at the promoter.arrow_forwardBelow is a model of a signal transduction pathway that results in the transcribing of mRNA: Receptor protein Transcription factor Phosphorylation cascade DNA mRNA What is the best description of what would happen if the phosphorylation cascade resulted in a phosphate being attached to the transcription factor? O mRN would not stop being transcribed from the DNA. O The phosphorylation cascade would continue to release excess phosphates. O mRNA would stop being translated from the DNA. O Receptor proteins would not bind to the signaling hormone.arrow_forward
- Listed below are steps in the transcription process. Reorganize the list so the steps in the correct order- starting with the first step in initiating transcription and ending with completion of a new strand of RNA (in other words- from start to finish of transcription). RNA polymerase reaches the termination signal DNA unwinds underneath RNA polymerase at transcription start site RNA polymerase is recruited to the promoter region mRNA transcript is released General Transcription factors bind TATA box (and other DNA sequences) in the promoter region General Transcription Factors unbind from promoter region mRNA transcript synthesis occurs RNA polymerase moves along the template strand in the 3’ to 5’ directionarrow_forwardAn activated eukaryotic transcription factor looks for specific:arrow_forwardWhat is the function of each of the following gene transcription elements? Positive transcription factors RNA polymerase Ribosome mRNA destroyer Transcription factor negativearrow_forward
- 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 initiationarrow_forwardExplain how a regulatory transcription factor exerts its effects via TFIID or mediator.arrow_forwardA protein binds a DNA sequence several hundred base pairs upstream of a promoter in a eukaryotic organism. This results in an increased rate of transcription of the gene. What type of protein is this? Group of answer choices Activator Silencer Enhancer Repressorarrow_forward
- The sigma factor protein's role in transcription in E. coli includes which of the following? None of the answer options are correct. plays a role in transcription termination forms part of the core enzyme required for transcription initiation helps the siRNA to bind to the promoter All of the answer options are correct. contributes to the proof-reading activity of RNA polymerase And The role of tRNA is to serve as an intermediate in the decoding of genes. serve as general translational components of the ribosome. facilitate protein trafficking in protein secretion. facilitate splicing of pre-messenger RNAs. act as vehicles bringing amino acids to the site of protein synthesis. None of the answer choices are correct.arrow_forwardHow do activators facilitate transcription? Activator (inactive) Activator- binding site RNA polymerase Promoter Transcription normally off. RNA polymerase cannot bind to the promoter unless the activator is bound to the activator-binding site, but the activator is in an inactive form. Inducer Activator (active) Inducer helps turn transcription on. Transcription Inducer binds to the activator and changes its shape, allowing the activator to bind to the site. RNA polymerase can then bind to the promoter and initiate transcription.arrow_forwardA TATA box is a short, A-T rich sequence of nucleotides located just upstream of genes and is used to recruit transcription factors and RNA polymerase to begin transcription. Based on this description, a TATA box is most likely a(n): promoter terminator transcription factor RNA polymerasearrow_forward
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