Q: Explain the following terms: Non-histone Chromosomal (NHC) proteins, euchromatin &…
A: Chromatin is a complex of DNA and protein found in eukaryotic cells. The primary function of…
Q: Describe the structure of nucleosome ( please keep it short as much as you can ).
A: A nucleosome is a basic structural unit of eukaryotic chromatin . It consists of approximately 150…
Q: How does histone acetylation alter chromatin structure? (300 word limit)
A: Histones known as a protein which provides chromosomes with structural support. These are usually…
Q: What is the diameter of a nucleosome?
A: A nucleosome is the basic formational unit of the DNA packaging in eukaryotic cells. The structure…
Q: Why does this translocation cause leukemia rather than cancer in a different tissue type, such as…
A: The change in location refers to as translocation. In this process, the segment of the chromosome is…
Q: Which of the following DNA types forms the nucleolar organizer (nucleolus)? centromeric…
A: 1. Centromeric heterochromatin: it is the part of the chromatin that is transcriptionally inactive…
Q: Describe what structural changes convert a chromosomal region that is 300 nm in diameter to one that…
A: Chromosomes are thread-like structures that are located in the nucleus. It is composed of protein…
Q: A diploid plant cell contains 2 billion base pairs of DNA. Q. Give the number of molecules of each…
A: Nucleosome is the packaging unit in eukaryotes. It is a fundamental subunit of chromatin.…
Q: Which type/s of histones is/are not part of the histone octamer wrapped by DNA strands but is found…
A: Histones proteins are present as octamer (eight) complex at the center of nucleosome. It consist of…
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: A chromosome that has spindle fibers attached to a specific chromosomal region… a. has a…
A: Spindle fibers are the threadlike design that is composed of microtubules. These start from the…
Q: Kree DNA has histone like proteins that wrap up in nucleosomes. The Kree have a core DNA length of…
A: Nucleosomes are the basic repeating unit of 'beads on a string' structure of eukaryotic chromosome.…
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: 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: What eukaryotic process requires chromatin remodeling?
A: Chromatin remodeling is the chromatin rearrangement from a condensed condition to a…
Q: Explain the chromatin remodeling complexes ?
A: In eukaryotes, the DNA is firmly twisted and tightly coiled into a complex called Chromatin. This…
Q: In eukaryotic cells, the nucleosomal core contains which arrangement of histone proteins? A. two H1,…
A: Histone proteins - Histone proteins are basic proteins which are present in the nucleus of the…
Q: Research has shown that more mutations accumulate in regions of a chromosome that consist of compact…
A: Mutations are defined as an error that occurs in DNA copying during cell division which changes the…
Q: Which structure in the eukaryotic chromosome is about 11 nm in diameter, contains 8 histone proteins…
A: In eukaryotes, all of the cell's chromosomes are stored inside a structure called the nucleus. Each…
Q: How does histone acetylation change chromatin structure? Group of answer choices 1. Histones lose…
A: Chromosomes are the condensed form of the chromatins. It contains DNA that contains histone proteins…
Q: Histone proteins contain tail amino acids that are positively charged. Which of the following…
A: DNA is a helical structure that carries the genes or the hereditary units of life. DNA is a…
Q: One of these is not part of the nucleosome core but is thought to participate in locking the two…
A: The fundamental subunit of chromatin is termed nucleosome. The nucleosome is made of two turns of…
Q: what are we looking at in part (b)? Is this an11-nm fiber, a 30-nm fiber, or a 300-nm fiber? Does…
A: DNA is the main constituent of the chromosome. It contains all information about protein that forms…
Q: Which histone helps stabilize the solenoid structure of eukaryotic chromatin? H4 H3 H2B H2A H1
A: Nucleosome are the just like a rounded ball which is wrapped by rope and are numerous in number . It…
Q: Would you expect to find active genes in regions of heterochromatin or euchromatin
A: DNA is the genetic material of all organisms except some viruses. The DNA are double stranded…
Q: True or False? Chromatin remodeling involves addition or removal of chemical groups to histones,…
A: The dynamic change of chromatin architecture to give condensed genomic DNA access to regulatory…
Q: 27. Nucleosomes: are important features of chromosome organization in eukaryotes and bacteria.…
A: Nucleic acids are one of the major macromolecules present in each and every living organism. These…
Q: Which of the following is likely to be transcriptionally expressed? euchromatin and DNA with…
A: Introduction: Two main stages are there at which gene is expressed: transcription and translation.…
Q: Name the 5 types of histones, Which form the nucleosome core and which histone holds the nucleosome…
A: Histones are protein biomolecules that are responsible for stabilizing and condensing the DNA of…
Q: Compare and contrast Heterochromati Euchromatin, Give at least 5 difference
A: A complex of DNA and proteins that forms chromosomes within the nucleus of eukaryotic cells is known…
Q: There are five major types of histones in eukaryotic cells. One of these is not part of the…
A: The nucleosome is the fundamental subunit of chromatin. The nucleosome is composed of two turns of…
Q: Loosening the chromatin structure occurs because of Select one: a. Lysine methylation b. Lysine…
A: Euchromatin: Euchromatin is a type of chromatin (DNA, RNA, and protein) that is densely packed with…
Q: Histone methylation alters the chromatin structure with varied effects depending on the specific…
A: Chemical modification of all histone proteins occurs. The modification that occurs at histone…
Q: Describe two different ways that histone modifications may alter chromatin structure.
A: Chromosomes appear at the time of cell division in the form of thread like structures inside the…
Q: Why are there so many differentchromatin remodeling complexes incells? What are their essential…
A: Chromatin remodeling is one of the most important concepts. It uses the energy from the hydrolysis…
Q: True or False. Chromatin remodeling is required for both homologous recombination and non-homologous…
A: In homologous chromosomes, exchange of the chromatin material occurs between the sister chromatids…
Q: The nucleosomal core in eukaryotes consists of all of the following histone proteins except:…
A: NUCLEOSOMES It is a section of DNA that is wrapped around a core of proteins termed as Histone…
Q: Motulsky's arrangement. Follow the format bellow. ogel & Motulsky Arrangement Name of chromosome…
A: Humans possess a total of 23 pairs of chromosomes, of which 22 pairs are autosomes, while the 23rd…
Q: Histones form more accessible chromatin because of Select one: a. Reduced electrostatic attraction…
A: Eukaryotic DNA remain associated with histone proteins and from nucleosome model. It is the…
Q: What mechanisms are involved in polynucleotide folding which produces a stable molecule that can fit…
A: A gene is a sequence of DNAs that codes for RNAs with the help of regulatory elements. The RNA is…
Q: Which of the following substances is NOT a component of a eukaryotic chromosome? choose 1 answer…
A: Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. It is…
Q: During SDS-PAGE, proteins are separated based on which of the following characteristics? A.…
A: SDS, also known as sodium lauryl sulfate in which we apply charge so that proteins are separated.…
Q: Describe the distinguishing features of the solenoid and zigzag models
A: The solenoid and zig-zag model both describe the pattern in which DNA is packed with the help of…
Q: What are the histone types found in the octamer wrapped by DNA strands?
A: Introduction: The DNA is wrapped around the histone protein, and the structure formed is called a…
Q: Define constitutive heterochromatin
A: Chromosomes are thread or string-like structures situated inside the nucleus of creature and plant…
Q: What is constitutive heterochromatin?
A: Heterochromatin is a condensed or tightly packed DNA. It is categorized by intense strain when…
Q: chromosome that has spindle fibers attached across its whole length… a. has a localized…
A: The centromere is that part of the chromosome that links the sister chromatids. Spindle fibers are…
Q: Why is transcriptionally active chromatin ∼10 times more susceptible to cleavage by DNase I than…
A: Chromatin : It is the material that makes up a chromosome that consists of DNA and proteins. The…
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- Define the following terms:a. histonesb. heterochromatinc. euchromatind. intergenic sequencese. tandem repeatsPlace the following eukaryotic DNA structures in order of thickness, smallest to largest heterochromatin double helix nucleosomes 30 nm chromatin fibre looped domainWhich structure in the eukaryotic chromosome is about 11 nm in diameter, contains 8 histone proteins and a short region of double-stranded DNA, and is easily accessible to transcription? the heterochromatin the supersolenoid the radial minibands the solenoid the nucleosome
- Put the following levels of chromosome organization in order from least complex (least packaged form) to most complex (most packaged form). DNA strand 30-nm fiber Heterochromatin Euchromatin. Which structure in the eukaryotic chromosome is about 2 nm in diameter, contains no histone proteins associated with double-stranded DNA, and is easily accessible to transcription? the heterochromatin the nucleosome the solenoid the naked DNA the radial minibandsFor each of the following pairs of chromatin types,which is the most condensed?a. 100 Å fiber or 300 Å fiberb. 300 Å fiber or DNA loops attached to a scaffoldc. euchromatin or heterochromatind. interphase chromosomes or metaphasechromosomes
- What makes up the protein component of nucleosome core (the "bead" that the DNA is wrapped around)?A part of a sequenced chromosome has the sequence (on one strand)ATTGCATCCGCGCGTGCGCGCGCGATCCCGTTACTTTCCG. Which part of thissequence is most likely to take up the Z conformation?When chromatin is treated with non-specific nucleases, what is the length of the resulting pieces of DNA
- Compare heterochromatin and euchromatin. What are the differences between them?Distinguish between heterochromatin and euchromatin.. For each of the terms in the left column, choose thebest matching phrase in the rigf. satellite DNA 6. small basic proteins that bind toDNA and form the core of thenucleosomeg. chromatin 7. complex of DNA and proteinswhere spindle fibers attach to achromosomeh. cohesin 8. beadlike structure consisting ofDNA wound around histoneproteinsi. histones 9. protein complex that protectstelomeres from degradation andend-to-end fusionsj. shelterin 10. regions of a chromosome thatare distinguished by stainingdifferencesht column.a. telomere 1. protein complex that keepssister chromatids togetheruntil anaphaseb. G bands 2. origin of replication in yeastc. kinetochore 3. repetitive DNA found near thecentromere in higher eukaryotesd. nucleosome 4. specialized structure at the endof a linear chromosomee. ARS 5. complexes of DNA, protein, andRNA in the eukaryotic nucleus