25. Which of the following describes the role of acetylation during the chromatin remodeling that accorpanies gene expression? A. It adds an acetyl group to the DNA of a promater sequence. B. it adds an acetyl group to the histone protecting the promoter region of a gene. C. it adds an acetyl group to the cytosine nucleotides of DNA. D. It adds an acetyl group to the histone protecting the transcription unit of a gene.

25. Which of the following describes the role of acetylation during the chromatin remodeling that accorpanies gene expression? A. It adds an acetyl group to the DNA of a promater sequence. B. it adds an acetyl group to the histone protecting the promoter region of a gene. C. it adds an acetyl group to the cytosine nucleotides of DNA. D. It adds an acetyl group to the histone protecting the transcription unit of a gene.

Name: 25. Which of the following describes the role ofacetylation during th
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Description: 25. Which of the following describes the role ofacetylation during the chromatin remodeling thataccorpanies gene expression?A. It adds an acetyl group to the DNA of apromater sequence.B. it adds an acetyl group to the histoneprotecting the promoter

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter15: From Dna To Protein

Section: Chapter Questions

Problem 8TYK

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1)A. how do you read a sequence of DNA (template or non-template strand) to convert it an mRNA sequence and to a protein? B.How does chromatin remodeling regulate gene transcription? C. What are the major differences between gene expression in bacteria and eukaryotes D. How are non-coding regions involved in gene transcription? E. Explain how eukaryotic genes sometimes produce multiple protein products?
1a. Provide a paper published in a scientific journal between January 2018 and September 2022 that addresses the role of an example of histone modification in affecting expression of a gene by altering histone acetylation/chromatin state of the DNA encoding that gene.
1. Transcription: a)State the role of RNA polymerase in gene transcription.b. Explain why the DNA is not used directly for protein translation (i.e., why is mRNA used instead?).c. Explain what occurs when a gene’s promoter region is open for RNA polymerase binding.d. Explain what occurs when a gene’s promoter regions is blocked from binding RNA polymerase.e. Explain how two cells, such as liver cells and skin cells, can become specialized in structure and function despite containing the same genome.
1a. Provide a paper published in a scientific journal between January 2018 and September 2022 that addresses the role of an example of histone modification in affecting expression of a gene by altering histone acetylation/chromatin state of the DNA encoding that gene. What organism and/or cell type did the authors do their study in?
How is the expression of genes controlled at the chromosomal level? A. DNA can synthesize extra histones as needed B. DNA can either be condensed into heterochromatin or decondensed into euchromatin C. DNA can be unwound into euchromatin to reduce the level of expression D. The expression of DNA can only be controlled at the transcriptional level E. DNA is spontaneously deleted from a chromosome if not needed
In eukaryotes, chromatin remodeling plays an important role is gene regulation. This is because a. repositioning of the nucleosomes makes DNA accessible to transcription regulatory proteins b. the nucleosomes contain important regulatory regions c. chromatin remodeling activates gene expression d. chromatin remodeling represses gene expression
1. The following regulatory mechanisms occur before eukaryotic transcription EXCEPT a. the formation of the transcription factor complex. b. the phosphorylation of eukaryotic initiation factors. c. the regulation of nuclear localization of transcription factors. d. the alteration of the DNA-binding domain of the transcription factor.
Match each of the following eukaryotic gene regulatory mechanisms or component to it's best description. v histone modification that causes chromatin to loosen A. enhancer increasing gene access B. acetyl group different mRNA transcripts are produced from the same starting DNA due to how exons and introns are interpreted C. methyl group v histone or DNA modification that causes chromatin to condense D. alternative RNA splicing decreasing gene access v eukaryotic control element where repressor or activator proteins can bind which can repress or promote transcription
Q. Which of the following describes the role of acetylation during the chromatin remodeling that accompanies gene expression? A. It adds an acetyl group to the DNA of a promoter sequence. B. It adds an acetyl group to the histone protecting the promoter region of a gene. C. It adds an acetyl group to the cyotsine nucleotides of DNA. D. It adds an acetyl group to the histone protecting the transcription unit of a gene.
. Dosage compensation is necessary because a. some regions of the genome contain more genes than others.b. genes near heterochromatin tend to be silenced. c. enhancers can activate transcription whether they are upstream or downstream of a gene. d. genes on the X chromosome have twice as many copies in females as in males
3a. Select all the correct types of RNA that are both the product of transcription and are also translated in the cytoplasm. ☐ snRNAs ☐ pre-tRNAs ☐ rRNA ☐ tRNA ☐ miRNA ☐ mRNA 3b. The ribozyme found in the ribosome catalyzes ... (which of the following?) a. the synthesis of pre-mRNA as part of the transcription process. b. the formation of the peptide bond. c. the association between the large and small ribosomal subunits. d. a reaction that uses RNA as a substrate.
1. Explain the anti-apoptotic role of telomerase and telomeres. In which cell type telomerase is normally expressed? Understand the pathway of cellular response to DNA damage; main players of this pathway such as p53 and p21, how they get activated and what is their function in the pathway. 2. Explain role of Apoptosis during embryo development and during metamorphosis. 3. Explain the main players of apoptosis – caspases (their active site, what site they target during cleavage, role of initiator caspases vs executioner caspases).