Biochemistry
6th Edition
ISBN: 9781305577206
Author: Reginald H. Garrett, Charles M. Grisham
Publisher: Cengage Learning
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Textbook Question
Chapter 29, Problem 20P
Chromatin decompaction is a preliminary step in gene expression (Figure 29.48). How is chromatin decompacted?
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Chapter 29 Solutions
Biochemistry
Ch. 29 - Prob. 1PCh. 29 - The Events in Transcription Initiation Describe...Ch. 29 - Substrate Binding by RNA Polymerase RNA polymerase...Ch. 29 - Comparison of Prokaryotic and Eukaryotic...Ch. 29 - Prob. 5PCh. 29 - Prob. 6PCh. 29 - Prob. 7PCh. 29 - Alternative Splicing Possibilities Suppose exon 17...Ch. 29 - Prob. 9PCh. 29 - Prob. 10P
Ch. 29 - Post-transcriptional Modification of Eukaryotic...Ch. 29 - Prob. 12PCh. 29 - Prob. 13PCh. 29 - The Lariat Intermediate in RNA Splicing Draw the...Ch. 29 - Prob. 15PCh. 29 - Prob. 16PCh. 29 - Prob. 17PCh. 29 - Prob. 18PCh. 29 - Figure 29.15 highlights in red the DNA phosphate...Ch. 29 - Chromatin decompaction is a preliminary step in...
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- Duplication of chromatin material takes place in which phase?arrow_forwardThe first product of genome expression is transcriptome but what happens if the RNA of the genes are not activated at a certain time?arrow_forwardThe genetic content of each somatic cell in an organism is the same, but not all genes are expressed in every cell. Why can't cells express all the genes they have?arrow_forward
- Describe chromatin when CpG islands are unmethylated?arrow_forwardYou add a chemical to a cell that prevents all of the chromatin from uncoiling so that the chromosomes remain highly coiled, even after the completion of mitosis. If you add a transcription factor that triggers the transcription of mRNA for the protein Pitx in this situation what would happen. Group of answer choices A)All transcription of Pitx is stopped by the transcription factor B)Nothing because the Pitx gene is already being transcribed at the maximum ratea C)Nothing, because the Pitx gene cannot be transcribed in this highly coild state D)The amount of transcription of Pitx is greatly increasedtarrow_forwardWhich of the following statements most accurately represent chromatin state and transcription? Group of answer choices 1.Histone deacetylases promote closed chromatin and result in repressed transcription 2.Open chromatin is associated with hypoacetylation and has high levels of transcription 3.Histone acetyltransferases result in hypoacetylation and high levels of transcription 4.Hyperacetylation is associated with closed chromatin and low levels of transcriptionarrow_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_forwardThe diagram below shows the structure of DNA from the level of a gene to a condensed mitotic chromosome. At each of the four locations marked, indicate how a gene may be regulated by selecting from the choices given. Some answer choices may fit into more than one position; however, you should use each answer choice only once. Choices given: Alternative splicing within the gene sequence can lead to different forms of mRNA. A promoter region can be blocked by another protein. Histone deacetylation can prevent DNA from unwinding. A regulatory region can be bound and increase transcription rates.arrow_forwardDuring certain stages of cell growth, the requirement for certain gene products may require gene amplification. What purpose does gene amplification serve?arrow_forward
- Explain the channels of the interchromatin compartments ?arrow_forwardWhat two properties define a stem cell? Distinguish between a totipotent stem cell, a pluripotent stem cell, and a precursor (progenitor) cell.arrow_forwardMatch the type of chromatin modification with the most likely effect on gene expression near the modified region. Each answer will be used once. -Increased expression -decreased expression -may increase or decrease expression a)Histone acetylation b)Histone methylation c)CpG methylationarrow_forward
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