Describe chromatin when CpG islands are unmethylated?

Q: Discuss the differences between the compaction levels of metaphase chromosomes and those of…

A: During interphase, chromosomes are arranged in a less condensed or compact manner. They occupy the…

Q: Define chromatin-mediated repression.

A: Histone is the basic protein abundant in lysine and arginine residues, which are located in the…

Q: When chromatin is in the form of a 30 nm fibril, how many copies of H1 and H2A histone proteins…

A: The DNA is wrapped around the nucleosome within the cell to form chromatin. Nucleosome – it is a…

Q: Describe chromatin when the CpG islands are methylated?

A: The eukaryotic chromosome is made of half DNA and half proteins. Out of total proteins, one half is…

Q: Describe the process of DNA replication that occurs during the S phase of interphase.

A: DNA replication is a biological process in which two identical replicas of DNA are produced from one…

Q: Define mitotic CDKs

A: Cyclin-dependent kinases (CDKs) are protein kinase families that were discovered for their function…

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: Define histone code.

A: Histone code is the hypothesis that the transcrition of genetic information encoded in DNA is in…

Q: Are spindle fibers visible in the interphase? And, describe the appearance of spindle fiber during…

A: Spindle fibers are the microtubules, centrosomes, and related constructions that structure during…

Q: During S phase, how are histonesand their modifying enzymescontrolled to replicate…

A: Cells reproduce by a cycle of growing and dividing called a cell cycle. The cell cycle is the…

Q: Where are DNase I hypersensitivity sites found, and what do they indicate about the nature of…

A: Deoxy ribonucleic acid (DNA) is the genetic material of most organisms that carry coded genetic…

Q: Explain the structure and function of the mitotic spindle

A: In cell biology, the mitotic spindle apparatus is molecular machinery made up of tubulin, motors and…

Q: How do chromatin modifications regulate transcription?

A: Chromatin is a complex of protein and DNA, present in eukaryotic cells. Its main function is to pack…

Q: Why do the chromosomes in chromatin condense in dividing cells?

A: In non dividing cells, the eukaryotic DNA ,the genetic  information is stored as linear chromosomes…

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: Differentiate between Allosome and Autosome.

A: Chromosomes are long thread-like structures that carry coded genetic information in the form of DNA.…

Q: Explain the Conservation of Chromatin Structure.

A: Chromatin Structure: It is composed of DNA and histones that are packaged into thin, stringy fibers.…

Q: Define about Chromatin Remodeling ?

A: The DNA is packed into the nucleus by using the protein. The chromatin is a DNA- protein complex.…

Q: TRUE OF FALSE: methylated chromatin is easily transcribed

A: Chromatin can be defined as the complex formed when DNA is wrapped around proteins in chromosomes'…

Q: Explain the chromatin remodeling complexes ?

A: In eukaryotes, the DNA is firmly twisted and tightly coiled into a complex called Chromatin. This…

Q: Disdis -how do RB and p53 negatively regulate the cell cycle in G1? describe the events that occur…

A: A series of events which takes place in a cell due to which it divides and forms two daughter cells…

Q: Define the term Chromatin?

A: A cell is the basic and fundamental unit of living organisms. They constituent of cell organelles…

Q: How does the low pH of lysosomes protect the restof the cell from lysosomal enzymes in case the…

A: Answer: Introduction: Lysosomes eliminate waste and terminating a cell later it has died, known as…

Q: Describe the levels of chromatin packing you’d expect to see in aninterphase nucleus.

A: DNA is Deoxyribonucleic acid has a deoxyribose as pentose sugar. Its structure has H group attached…

Q: What are interchromatin compartments ?

A: A cell is comprised of several components including nucleus, cell membrane, and cell cytoplasm.…

Q: Briefly describe the structure of chromatin.

A: Chromatin is a complex of macromolecules composed of DNA, RNA and protein , which is found inside…

Q: What role does chromatin structure play in cell memory and in cell reprogramming?

A: Cellular reprogramming is a process of formation of pluripotent stem cells from mature and…

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: Explain the channels of the interchromatin compartments ?

A: The nucleus is the most important organelle present in the eukaryotic cells and is made up of a…

Q: Are spindle fibers visible in the interphase? And, describe the appearance of spindle fiber during…

A: Spindle fibers make a protein which split the genetic constituents inside the cell. This spindle is…

Q: Contrast the   mobilization mechanisms ofretrotransposons and DNA transposons.

A: Transposable elements (TEs) are the small segments of DNA that can move from one position to other…

Q: Describe the organization of the interphase nucleus. Include inyour presentation a description of…

A: DNA is a molecule found in the nucleus by Friedrich Meischer in the late 1860s, but its function was…

Q: Chromatin condenses. Name: Homologs aligned by synapsis and chromosomes are compact. Name:

A: Mitosis and meiosis are the type of cell divisions which are required for growth and cell division.…

Q: Describe the structure and function of the mitotic spindle

A: The cell division causes the formation of identical daughter cells from the parent cell. The types…

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: dentify TWO major categories of chromatin responsible in compaction of chromosome

A: Chromatin : It is a complex of DNA and protein which forms chromosomes within the nucleus of the…

Q: Differentiate between Centromere and Telomere.

A: Chromosome is the rod shaped, dark stained bodies which are most prominently seen in the metaphase…

Q: Arrange the levels of chromatin packing from most "open" to most condensed (chromosome, loops,…

A: Chromatin is a complex combination of DNA and proteins that makes up the chromosomes within 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: Why does chromatin condense during apoptosis?

A: Apoptosis is a genetically programmed phenomenon where a dying cell breaks off in many small…

Q: Define about chromatin assembly factors (CAFs) ?

A: A chromosome's chromatin is a DNA and protein-based material. The genetic instructions for a cell…

Q: How many nucleosomes are involved per turn of the spiral arrangements of the chromatin fiber?

A: Nucleosome is the main and basic unit of DNA packaging in the eukaryotic cells. The structure of…

Sleep Physiology

Sleep is a condition of reduced muscle movement in the body. Awareness about the surroundings is reduced at the time of sleep. The body stays mildly responsive or non-responsive to external stimuli. The sleep-wake cycle is controlled by the circadian rhythm that produces a resting phase for the body.