In eukaryotic chromatin, tightly coiled scaffolding proteins would indicate a region where genes are currently expressed at high levels. True or False
Q: Give at least one example of a chromosomal structureor function affected by the following mechanisms…
A: Chromosomes are thread-like structure of nucleic acids and protein, which are found in the nucleus…
Q: Define chromatin-mediated repression.
A: Histone is the basic protein abundant in lysine and arginine residues, which are located in the…
Q: A researcher found that she could increase phosphorylation of amino acids adjacent to methylated…
A: Histone Phosphorylation It is associated with transcriptional activation. It takes place with the…
Q: Which of the following statements correctly describes the structure of chromatin around the promoter…
A: Chromatin is a complex of DNA and protein found in eukaryotic cells.
Q: Describe how reversible chemical changes to histones are linked to chromatin modification.
A: Histones are basic proteins associated with DNA in the nucleus and allow it to condense in chromatin…
Q: Discuss the role of chromatin proteins in regulating gene expression. How does the three-dimensional…
A: Chromatin is a part of the nucleus of the eukaryotic cell. This highly organized complex of DNA and…
Q: True or False. De-acetylation of histone tails allows nucleosomes to pack together into tighter…
A: DNA is the nucleic acids present in the organisms. DNA is the deoxy ribose nucleic acid in which…
Q: Which of the following statements most accurately represent chromatin state and transcription?
A: A quality is the fundamental physical and functional unit of heredity. Genes are comprised of DNA. A…
Q: A chromatin-remodeling complex may a. change the locations of nucleosomes. b. evict nucleosomes from…
A: Nucleosome is the packaging unit in eukaryotes. It is a fundamental subunit of chromatin.…
Q: Yeast chromosome XII contains the HAP1 gene that contains codes to regulate proteins involved with…
A: Transcription is the process which is responsible for synthesizing the mRNA from the DNA by the…
Q: Changes in chromatin packing correlate with changes in gene expression in most cells. Why do you…
A: The chromosomes resemble a mass of extremely fine tangled string called chromatin, consisting of DNA…
Q: scribe how the acetylation of core histones may loosen chromatin packing.
A: DNA is the genetic material is usually found in all prokaryotic and eukaryotic cells. DNA is made up…
Q: Which of the following may produce more than one functional protein from an mRNA transcript?a.…
A: Chromosome condensation is the re-organization of the long thin chromatin strands into compact…
Q: Small molecules binding to histone proteins also control gene expression by chromatin remodelling…
A: Genes or DNA are generally coiled and held together by the help of structural proteins called…
Q: Compared to heterochromatin, euchromatin is O comprised of densely packed nucleosomes and with…
A: Heterochromatin is characterized as the region of the chromosome which is obscurely darkled stained…
Q: Describe how chromatin is remodeled to regulate gene expression in eukaryotes
A: Eukaryotes =Eu(true) +Karyon (nucleus). Organism with true nucleus is known as Eukaryotes.
Q: Chromatin remodeling is affected by two processes, DNA methylation and a. base substitution b.…
A: Chromatin remodeling is the dynamic modification of chromatin architecture to allow access of…
Q: In studies on chromatin it has been reported that DNA that is being actively transcribed is more…
A: DNA- “deoxyribonucleic acid” is a complex structure that carries the unique genetic code of every…
Q: Describe nucleosome supercoiling and its relationship to the radial loop–scaffold model of chromatin…
A: DNA being a large molecule, is packed with histone proteins to form a very compact structure known…
Q: Describe constitutive heterochromatin and facultative heterochromatin. Based upon this information,…
A: A nucleic acid is a linear polymer of nucleotides that carries the cell's information. DNA…
Q: Chromatin is differentiated into heterochromatin and euchromatin regions, on the basis of staining…
A: Answer: Introduction: Some proteins are dense chromosomal DNA into the microscopic gap of the…
Q: In regions of_____________-, promoters are tightlywrapped in nucleosomes, preventing transcription…
A: Gene expression is a process by which the genes are turned on to form RNA and proteins.…
Q: Which one of the following statements about nucleosomes is false? a) The DNA double helix wraps…
A: Introduction Nucleosomes are eukaryotic chromatin's basic repeating structural units, comprised of…
Q: fill in the blank When the cell goes from M to GI, the number of nucleosomes on this stretch of DNA…
A: The cell cycle is a cyclic process where new cells are formed, increase in size, and enters…
Q: Discuss the role/relevance of chromatin in the storage, expression and transmission of genetic…
A: Chromatin is the material that makes up a chromosome that consists of DNA and protein. The reason…
Q: A chromatin rearrangement on the EGFR gene promoter An mRNA stabilising protein binding to the 3'…
A: A gene is made up of DNA which is able to synthesizer functional product in the form of RNA or a…
Q: describe the process of lysosomal hydrolase arriving to the lysosome. without including translation
A: The targetting of lysosomal enzyme depends on GERL system. Lysosome, Golgi bodies, endoplasmic…
Q: class of non-protein coding RNA molecules that are important in chromatin opening
A: It's always necessary to regulate the genome structure and also the gene expression process. This…
Q: Which illustration below correctly depicts the effect of histone modification in chromatin…
A: The power of ATP is used by chromatin remodelers to move DNA around nucleosomes. Remodeler…
Q: Histones can be modified to turn genes on and off. Which type of chromatin is associated with…
A: Chromatin is a complex form of DNA molecule and Histone protein which was found in eukaryotic…
Q: asic amino acids including lysine. DNA and histones collectively form chromatin. Open open and…
A: Histones can be defined as the family of basic proteins that are associated with the DNA in the…
Q: Which region of chromatin is transcriptionally silent?a) Nucleoidb) Centromerec) Euchromatind)…
A: Deoxyribonucleic acid (DNA) is a molecule composed of two polynucleotide chains. It coils around…
Q: Discuss histones and how methylation and acetylation of DNA and histones can affect the production…
A: Histone modifications are related to the structural changes that mainly happen during the time of…
Q: Explain how the acetylation of core histones may loosen chromatin packing.
A: DNA is the genetic element in all cell types of prokaryotic and eukaryotic. DNA is double stranded…
Q: Suppose a chemist develops a new drug that neutralizes the positive charges on the tails of histone…
A: Nucleosome is a basic structural and functional repeating unit of chromatin. It is also a unit of…
Q: One histone modification that is seen consistently inmany species is the addition of an acetyl group…
A: Introduction: Histone is a type of protein that functions to support the chromosome structure.…
Q: C. Suppose the section of interphase chromatin described above came from an active gene in a muscle…
A: Answer :- None of these The necklace like structure mentioned was stated false or disproved…
Q: According to the histone code hypothesis, the pattern of histone modifications acts like a language…
A: Histone code hypothesis states that the regulation of gene is partly dependent on the modification…
Q: Chromatin remodeling is linked to epigenetics. Explain how this works and indicate the driving…
A: Epigenetics is referred to as the study of phenotype changes that are inheritable and does not…
Q: Why must chromatin be remodeled at a eukaryotic promoter? Histone proteins must be added to the…
A: Eukaryotic DNA remain associated with histone proteins and form a specialised structure that is…
Q: Which is the expected outcome following the deacetylation of histones?
A: Ans - a) Coiling of chromatin, preventing it from being accessed by the transcriptional machinery.…
Q: If the genome structure exists in the form of heterochromatin, this indicates that the cell is------…
A: Chromosomes are highly condensed DNA structures that contain all the genes of the organisms. The…
Q: Outline how histone methylation and acetylation affectchromatin structure
A: Gene expression may be done by the transcription of DNA into mRNA and formation of polypeptide…
Q: how does histone acetlation affect chromatin structure and gene expression
A: Genes are a type of hereditary unit that directs protein synthesis in living organisms. Through…
Q: . It has been proposed that nucleosomes must be removed in order for transcription to proceed…
A: Chromatin : It is the material that makes up a chromosome the consists of DNA and protein. The major…
In eukaryotic chromatin, tightly coiled scaffolding proteins would indicate a region where genes are currently expressed at high levels.
True or False
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- In eukaryotes which of the following combination of chromatin conditions would be most likely to result in the highest levels of expression of gene?Which of the following statements is NOT true about chromatin architecture? A. The histone tails on heterochromatin are deacetylated B. Heterochromatin is heavily methylated C. Euchromatin is more likely to contain genes that are expressed at that time D. Euchromatin is heavily methylatedChanges in chromatin packing correlate with changes in gene expression in most cells. Why do you think this is the case?
- If 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).Heterochromatin 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 chromatinWhich region of chromatin is transcriptionally silent?a) Nucleoidb) Centromerec) Euchromatind) Heterochromatin
- The term heterochromatin refers to heavily condensed regions of chromosomes that are largely devoid of genes. Since few genes exist there, these regions almost never decondense for transcription. At what point during the cell cycle would expect to observe decondensation of heterochromatic regions? Why?Which of the following is likely to be transcriptionally expressed? euchromatin and DNA with methyl groups euchromatin DNA with methyl groups DNA with acetylated histones euchromatin and DNA with acetylated histonesGive at least one example of a chromosomal structureor function affected by the following mechanisms formodulating chromatin structure:a. Posttranslational changes of the normal histonesfound in the nucleosome
- Regulation of Gene Expression by Chromatin Modification is Local and Dynamic! What does the statement above mean?Loosening the chromatin structure occurs because of Select one: a. Lysine methylation b. Lysine acetylation c. Lysine phosphorylation d. Lysine sumoylationChromatin decompaction is a preliminary step in gene expression (Figure 29.48). How is chromatin decompacted?