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What role do histones play in the enormous amount of DNA in a eukaryotic cell to fit into the nucleus?
Wiki User
∙ 14y ago
Histones serve to orderly condense the DNA by first letting DNA wrap around them and then forming gigantic coils that drastically reduce the space required to store unwrapped DNA. Think of histones as similar to the reels in a cassette. With the reels the magnetic tape can be stored in a very small volume but if you rip out all the tape it will occupy a much larger volume.
Wiki User
∙ 14y ago
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How is mass number related to the nucleus?
The mass number is the amount of neutrons within the nucleus minus the amount of protons/electrons.
What does a nucleoid consist of?
CompositionExperimental evidence suggests that the nucleoid is largely composed of DNA, about 60%, with a small amount of RNA and protein. The latter two constituents are likely to be mainly messenger RNA and the transcription factor proteins found regulating the bacterial genome. Proteins helping to maintain the supercoiled structure of the nucleic acid are known as nucleoid proteinsor nucleoid-associated proteins and are distinct from histones of eukaryotic nuclei. In contrast to histones, the DNA-binding proteins of the nucleoid do not form nucleosomes, in which DNA is wrapped around a protein core. Instead, these proteins often use other mechanisms to promote compaction such as DNA bending or DNA-DNA bridging.
Where is the largest amount of DNA stored in a plant cell?
In the nucleus. However since chromosomes are in the Nucleus they contain the DNA a cell needs to survive. This is why it is in the Nucleus,
Where are protons and neutrons of an atom contained?
The nucleus of an atom contains protons and neutrons. Different amount of neutrons- Isotopes. Different amount of protons- Different element.
What is the total amount of DNA in the nucleus called?
A genome
What role do proteins in enabling the enormous amount of DNA in a eukaryote cell to fit into the nucleus and what are those proteins called?
DNA that is not being "used" by the cell is wrapped up around proteins called histones.
What role do proteins play in enabling the enormous amount of DNA in a eukaryotic cell to lit into the nucleus and what are those proteins called?
Histones are proteins which help to tightly pack the DNA into the nucleus of eukaryotic cells. A histone octamer (8 histones together= 2 of H3, 2 of H4, 2 of H2A and 2 of H2B) is formed and the DNA is wrapped 1.65 times around these 8 tightly packed histones forming a nucleosome. There are many nucleosomes along the DNA and together they look similar to a pearl necklace, with the beads being the nucleosomes. The nucleosomes can then be packed together even more tightly (like in heterochromatin) by other proteins.Histones
What is a difference between eukaryotic and prokaryotic cells?
Prokaryotic and eukaryotic DNA carry genetic information for the development, functioning and reproduction of prokaryotes and eukaryotes respectively. Eukaryotes consist of membranebound nucleus whereas prokaryotes lack a membrane­bound nucleus. Prokaryotic DNA is double­stranded and circular. But, eukaryotic DNA is double­strand and linear. The amount of DNA in prokaryotic cells is much less than the amount of DNA in eukaryotic cells. Both prokaryotic and eukaryotic DNA undergo replication by the enzyme DNA polymerase. The main difference between prokaryotic and eukaryotic DNA is that prokaryotic DNA is found in the cytoplasm whereas eukaryotic DNA is packed into the nucleus of the cell.
What is the difference eukaryotic cell and prokaryotic cell?
Prokaryotic and eukaryotic DNA carry genetic information for the development, functioning and reproduction of prokaryotes and eukaryotes respectively. Eukaryotes consist of membranebound nucleus whereas prokaryotes lack a membrane­bound nucleus. Prokaryotic DNA is double­stranded and circular. But, eukaryotic DNA is double­strand and linear. The amount of DNA in prokaryotic cells is much less than the amount of DNA in eukaryotic cells. Both prokaryotic and eukaryotic DNA undergo replication by the enzyme DNA polymerase. The main difference between prokaryotic and eukaryotic DNA is that prokaryotic DNA is found in the cytoplasm whereas eukaryotic DNA is packed into the nucleus of the cell.
What is the difference between prokaryotic and eukaryotic cell?
Prokaryotic and eukaryotic DNA carry genetic information for the development, functioning and reproduction of prokaryotes and eukaryotes respectively. Eukaryotes consist of membranebound nucleus whereas prokaryotes lack a membrane­bound nucleus. Prokaryotic DNA is double­stranded and circular. But, eukaryotic DNA is double­strand and linear. The amount of DNA in prokaryotic cells is much less than the amount of DNA in eukaryotic cells. Both prokaryotic and eukaryotic DNA undergo replication by the enzyme DNA polymerase. The main difference between prokaryotic and eukaryotic DNA is that prokaryotic DNA is found in the cytoplasm whereas eukaryotic DNA is packed into the nucleus of the cell.
What is the difference between a eukaryotic and prokaryotic cell?
Prokaryotic and eukaryotic DNA carry genetic information for the development, functioning and reproduction of prokaryotes and eukaryotes respectively. Eukaryotes consist of membranebound nucleus whereas prokaryotes lack a membrane­bound nucleus. Prokaryotic DNA is double­stranded and circular. But, eukaryotic DNA is double­strand and linear. The amount of DNA in prokaryotic cells is much less than the amount of DNA in eukaryotic cells. Both prokaryotic and eukaryotic DNA undergo replication by the enzyme DNA polymerase. The main difference between prokaryotic and eukaryotic DNA is that prokaryotic DNA is found in the cytoplasm whereas eukaryotic DNA is packed into the nucleus of the cell.
What is the different between a prokaryotic and eukaryotic cell?
Prokaryotic and eukaryotic DNA carry genetic information for the development, functioning and reproduction of prokaryotes and eukaryotes respectively. Eukaryotes consist of membranebound nucleus whereas prokaryotes lack a membrane­bound nucleus. Prokaryotic DNA is double­stranded and circular. But, eukaryotic DNA is double­strand and linear. The amount of DNA in prokaryotic cells is much less than the amount of DNA in eukaryotic cells. Both prokaryotic and eukaryotic DNA undergo replication by the enzyme DNA polymerase. The main difference between prokaryotic and eukaryotic DNA is that prokaryotic DNA is found in the cytoplasm whereas eukaryotic DNA is packed into the nucleus of the cell.
Amount of matter?
The amount of matter in our universe is enormous.
Describe the structure of eukaryotic chromosomes?
Eukaryotic chromosomes consist of a DNA-protein complex that is organized in a compact manner which permits the large amount of DNA to be stored in the nucleus of the cell. The Chromatin and Nucleosome are two of the most important parts.
What happens in the core of the star?
Nuclear fusion does. The nuclei (nucleuses) of 2 or more atoms join into a single nucleus, which releases a comparatively enormous amount of energy. This process is the source of the energy that a star radiates.
What star is made of an enormous amount of gas?
All stars are enormous balls of burning gas.
What is another words for a large amount?
enormous load
