how is the structure of chromatin loops beneficial to a cell?

Q: Why do chromosomes have moredifferent types of nonhistone than histone proteins?

A: Both histones and non-histones are proteins that contribute to the DNA structure. These are the main…

Q: Compare heterochromatin and euchromatin. What are the differences between them?

A: Deoxyribonucleic acid (DNA) in the eukaryotic cell nucleus present in a highly compacted fashion.…

Q: Why Heterochromatin spreads linearly?

A: Heterochromatin refers to the part of the chromosomal regions that appear dark due to 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: What has happened to the chromatin in the diagram? What regulatory proteins binds to what part of…

A: DNA is a double helical structure, which is wrapped around histones.  histones are proteins found in…

Q: What is repeating components of each strand lengthwise called?

A: DNA is the information molecule that stores instructions for making proteins. These instructions are…

Q: What two properties, one structural and one functional,distinguish heterochromatin from euchromatin?

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

Q: What is facultative chromatin?

A: Chromatin are of two types. They are euchromatin and heterochromatin. Euchromatin are enriched with…

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: Explain the Conservation of Chromatin Structure.

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

Q: How are the processes of DNA replication and transcriptionsimilar? How are they different?

A: DNA replication of transcription are the processes that are involved in the central dogma. DNA…

Q: What is a nucleosome? a. A region in the cell’s nucleus that contains euchromatin b. A region of…

A: DNA(deoxyribonucleic acid) is a molecule comprised of two polypeptide chains that coil around each…

Q: Distinguish between heterochromatin and euchromatin.

A: Two types of chromatin (euchromatin and heterochromatin) are distinguishable during the interphase.…

Q: Describe the appearance and composition of chromatin and the structure of nucleosomes. Comment on…

A: Answer- Chromatin is uncondensed genetic material which is present in the nucleus most of the time…

Q: Which histone is not a necessary component in the formation of nucleosornes?

A: In eukaryotes, the DNA is packed in a compact form in which a DNA segment is wound around 8 histone…

Q: How many copies of the H2B histone would be found in chromatin containing 50 nucleosomes? a. 5 b. 10…

A: The defined length of DNA is attached to a collection of histones called octamer. The total unit is…

Q: Define the heterochromatin ?

A: The chromosomes in the cell nuclei can be seen in different sizes and shapes through out the cell…

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: Compare and contrast the relationship between chromatin andchromosomes.

A: The genetic material refers to the materials present in the nucleus, mitochondria, and 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: Differentiate between the Euchromatin and Heterochromatin

A: Chromatin is a complex of DNA and protein found in eukaryotic cells. Its primary function is…

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: Of which substances is chromatin made?

A: The chromosomes are thread-like structures found in the nucleus of the cell. The chromosomes possess…

Q: What is the role of  histone proteins in the nucleus?

A:

Q: How is chromatin  remodeled to regulate gene expression in eukaryotes.

A: Complex of genomic DNA with proteins is referred as chromatin.   Due to Storage of eukaryoric…

Q: If the chromatin is removed from a eukaryotic nucleus, what remains?

A: Chromatin is a condensed structure of DNA and proteins that give rise to chromosomes of eukaryotic…

Q: What is chromatin, euchromatin, and heterochromatin

A: The nucleus (plural-nuclei) is the most important and essential part of the cell. It directs and…

Q: What are the   basic functions of histones?

A: The folding of the DNA molecule into a compact, orderly structure that fits into the limited space…

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: How eukaryotic cells modify chromatin ?

A: Eukaryotic cells modify chromatin through the process called chromatin remodeling. In the process,…

Q: What is chromatin condensation?

A: The sequence of events by which a cell duplicates its genome, synthesis the other constituents of…

Q: How come cells in a multicellular organism look different and have different functions and How could…

A: One cell that is the fertilized egg able to produce the whole organism through division.

Q: how is genetic information organized in a cell

A: Heritable biological information is encoded in DNA or RNA nucleotide sequences (some viruses), such…

Q: Describe heterochromatin and euchromatin when viewed under an electron microscope

A: Euchromatin and heterochromatin are the parts of chromatin discovered by E. Heitz in 1928.…

Q: How are chromosomes in eukaryotic cells packaged?

A: The eukaryotic DNA can be packed into chromosome shape. this type of packaging is only observed it…

Q: During cell division what does the centrosome generates?

A: The cell is the basic unit of life. The tissue is a group of cells that perform specific functions.…

Q: How are nucleosomes arranged in condensed 30-nm fibers?

A: The main aim of coiling and various kind of measures undertaken, making a complex structure of DNA…

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: Why does chromatin condense during apoptosis?

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

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: 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…

Q: Define chromatin.

A: Chromatin is a state of DNA when it is in the process of packaging. As we know that DNA is very…

Oogenesis

The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase. 

Cell Division

Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons: