Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
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Textbook Question
Chapter 16, Problem 16.3CC
Changes in chromatin packing correlate with changes in gene expression in most cells. Without knowing any details about transcription of DNA into RNA, why do you think this is true?
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Chapter 16 Solutions
Becker's World of the Cell (9th Edition)
Ch. 16 - Based on what you know about protein and DNA, why...Ch. 16 - The GC content of the DNA from a newly discovered...Ch. 16 - Prob. 1QCh. 16 - Changes in chromatin packing correlate with...Ch. 16 - You are studying a cytosolic protein, and your...Ch. 16 - Prior Knowledge. Virtually every experiment...Ch. 16 - DNA Base Composition. Based on your understanding...Ch. 16 - DNA Structure. Carefully inspect the...Ch. 16 - QUANTITATIVE DNA Melting. Figure 16-36 shows the...Ch. 16 - DNA Renaturation. You are given two samples of...
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- Histones can be modified to turn genes on and off. Which type of chromatin is associated with transcriptionally active regions of the DNA?arrow_forwardEuchromatin is said to be transcriptionally-active while Heterochromatin is said to be transcriptionally-inactive. What does this mean?arrow_forwardIf histones are acetylated on a lysine amino acid (an epigenomic mark), are genes in this region likely to be expressed or not? Briefly, in a sentence or two, explain your answer. (Hint: In your answer explain what the DNA and chromatin structure would look like in regions with the acetylation compared to regions without).arrow_forward
- Which is the expected outcome following the deacetylation of histones? a) Coiling of chromatin, preventing it from being accessed by transcriptional machinery b) Coiling of chromatin, allowing it to be accessed by transcriptional machinery c) Uncoiling of chromatin, preventing it from being accessed by transcriptional machinery d) Uncoiling of chromatin, allowing it to be accessed by transcriptional machineryarrow_forwardEukaryotic life also uses chromatin modifications to turn transcripts on and off. We talked about PARP-1 and its ability to remodel chromatin in response to what?arrow_forwardWhat is meant by the term chromatin remodeling? Describe the importance of this process to transcription.arrow_forward
- What kind of changes Transcription Requires in Chromatin Structure and Nucleosome Position?arrow_forwardWhy Transcription Requires Changes inChromatin Structure and NucleosomePosition?arrow_forwardWhy is transcriptionally active chromatin ∼10 times more susceptible to cleavage by DNase I than transcriptionally silent chromatin?arrow_forward
- Explain, How does histone acetylation alter chromatin structure?arrow_forwardHeterochromatin consists of a) region of euchromatin devoid of histones. b) an AT-rich region occurs every 200 base pairs. c) decondensed, transcriptionally active chromatin. d) highly condensed, transcriptionally inactive chromatinarrow_forwardWhat effect would inhibitors of histone deacetylases have upon transcription? Group of answer choices They would increase transcription by making the chromatin more compact They would increase transcription by making the chromatin less compact They would decrease transcription by making the chromatin more compact They would decrease transcription by making the chromatin less compact For this question, we will consider a eukaryotic mRNA that has four exons (E1, E2, E3, E4) and three introns (I1, I2, I3). What could occur if a protein were to bind over the 3' splice site of intron 2 (I2)? Group of answer choices The processed mRNA would consist of: E1+E2+E3+E4 The processed mRNA would consist only of: E1+E3 The processed mRNA would consist only of: E3+E4 The processed mRNA would consist of: E1+E2+E4arrow_forward
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