Which of the following statements correctly describes the structure of chromatin around the promoter of an active eukaryotic gene? O A. It is in the form of heterochromatin and the nucleosomes are tightly wrapped. O B. It is in the form of euchromatin and the nucleosomes are cleared from the region allowing for an open and accessible configurat O C.A repressor protein is bound to the chromatin blocking RNA polymerase. O D.Both B and C.

Which of the following statements correctly describes the structure of chromatin around the promoter of an active eukaryotic gene? O A. It is in the form of heterochromatin and the nucleosomes are tightly wrapped. O B. It is in the form of euchromatin and the nucleosomes are cleared from the region allowing for an open and accessible configurat O C.A repressor protein is bound to the chromatin blocking RNA polymerase. O D.Both B and C.

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

See similar textbooks

Similar questions

Nucleosome positioning could affect the transcriptional activity of a gene. Give your inference on the activity of the gene in these condition: 1. No histone H1 protein and nucleosome structures cover the promoter, 2. Nucleosome crosslinked with histone H1 flanking the promoter region. 3. No nucleosome and Histone H1 flanking the promoter region.
Hac1 is another chaperone protein that is up-regulated in response to unfolded proteins in the ER. You detect amounts of Hac1 mRNA and protein in the absence and presence of unfolded protein in the ER of a eukaryotic cell as shown in the figure below. b. Describe two specific biological processes that the cell could regulate in order to increase the amount of Hac1 protein. Briefly explain your answer using the information from figure C & D. Hac1 MRNA expression Hac1 protein expression Unfolded proteins in ER No unfolded No unfolded proteins In ER Unfolded protelns in ER proteins in ER
In addition to euchromatin and general transcription factors, initiation of transcription in humans requires __________ in proximal promoters and activators bound to __________. Question 2 options: No 5-methylcytosine; distal promoter but not proximal promoter No 5-methylcytosine; both distal promoter and proximal promoter 5-methylcytosine; distal promoter but not proximal promoter 5-methylcytosine; both distal promoters and proximal promoters No 5-methylcytosine; proximal promoter but not distal promoter
Think of the eukaryotic gene expression process. Which column below accurately describes which components of the gene are transcribed by RNA polymerase? Component A C Ribosomal binding site Yes No Yes Yes Promoter Yes Yes No No Exons Yes Yes Yes Yes Introns No Yes No Yes O A B.
A lake with low nutrient levels and very clear water is called eutrophic oligotrophic a dead zone a septic zone oxygen depleted
If a mutation occurred in a control element sequence associated with a particular gene, which of the following would be a likely consequence of this? A. This mutation is not likely to affect the expression of the associated gene, because RNA polymerase does not bind to control elements. B. This will likely affect the expression of the associated gene because it will loosen the coiling of chromatin at this site. C. The expression of the associated gene will be affected because this change will result in a nonsense mutation. D. This mutation is not likely to affect the expression of the associated gene, since control elements are noncoding sequences. E. The associated gene's expression would likely be affected, since this mutation would change the ability of at least one transcription factor to bind.
Explain well
Control of gene expression in eukaryotic cells occurs at which level(s)? Lüffen birini seçin: a. epigenetic and transcriptional levels O b. post-transcriptional, translational, and post-translational levels O c. only the transcriptional level O d. epigenetic, transcriptional, post-transcriptional, translational, and post-translational levels O e. epigenetic, transcriptional, and translational levels
Correct regarding transcript processing: (A) Influences the amount and kinds of MRNA assembled from structural genes B Nuclear envelope selectively regulates passage of transcripts Phosphorylation of translated protein D Snipping out of transcript regions; chemical modification of transcript before it arrives at ribosome control
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
Let's say there is an eukaryotic gene that has five exons and 4 introns. If the GU sequence at the 5' splice site of the third intron is deleted, describe how this is going to affect the expression of this gene. draw the mature mRNA too.