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Do eukaryotic chromosomes consist of circular DNA molecules complexed with positively charged nonhistone proteins?
Wiki User
∙ 11y ago
No. Sounds as if you are describing a prokaryote chromosome.
Wiki User
∙ 11y ago
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DNA complexed with protein is called?
DNA complexed with proteins is chromatin. Chromatin condenses to form a chromosome. The definition of chromatin is "A complex of nucleic acids (e.g. DNA or RNA) and proteins (histones), which condenses to form a chromosome during cell division. In eukaryotic cells, it is found within the cell nucleus whereas in prokaryotic cells, it is found within the nucleoid. Its functions are to package DNA into a smaller volume to fit in the cell, strengthen the DNA to allow mitosis and meiosis, and to serve as a mechanism to control expression."
How prokaryotes chromosomes differ from eukaryote?
A prokaryotic chromosome consists of a single molecule of DNA in the form of a closed loop. The chromosome is described as circular. A prokaryotic cell has only one chromosome. A eukaryotic chromosome is linear, not circular, in other words it has two ends, like a sausage. Each chromosome contains one molecule of DNA for the first half or so of interphase, then the DNA replicates, and the two DNA molecules remain together (as sister-chromatids) in the same chromosome for the rest of interphase. This does not happen in prokaryotic cells. Eukaryotic cells have more than onechromosome. A further difference: prokaryotic chromosomes consist only of a naked DNA molecule, but eukaryotic chromosomes also contain many molecules of proteins (mostly histones). The DNA is wound around these proteins.
What events occured that allowed single celled organisms to evolve into more complex organisms at the end of the precambrian time?
the ozone layer began to develop shielding earth from ultraviolet rays, this was hypothesized that these changes allowed species of single celled organisms to evolve into more complexed organisms
Water and energy from the sun to photosynthesis.?
Photones are used to break an electron free from a chlorophyll molecule, then the electron goes through very complexed series of reactions called light-dependent reactions after which ATP (energy) is synthetised. So light energy is used to power photosynthesis.
What is virus and explain its structure?
Virus is Latin word which means "POISON". They are of different shapes, some are rounded, rod-shaped, and polyhedral and some are like tadpoles. STRUCTURE:Structurally viruses are not cellular but are made up of nucleic acid and proteins. They have to parts, an outer "coat" and inner "core". The coat is made up of proteins and core is made up of DNA or RNA. AWAIS AHMED awais94_2005@yahoo.com PAKISTAN INTERNATIONAL SCHOOL JEDDAH
What cells lack a nuclear envelope?
the cells that have a nuclear envelope are eukaryotic cells.As prokaryotic cells are cells that have a cytoplasm, and a cell membraneAnd Eukaryotic cells are the more complexed cells
DNA complexed with protein is called?
DNA complexed with proteins is chromatin. Chromatin condenses to form a chromosome. The definition of chromatin is "A complex of nucleic acids (e.g. DNA or RNA) and proteins (histones), which condenses to form a chromosome during cell division. In eukaryotic cells, it is found within the cell nucleus whereas in prokaryotic cells, it is found within the nucleoid. Its functions are to package DNA into a smaller volume to fit in the cell, strengthen the DNA to allow mitosis and meiosis, and to serve as a mechanism to control expression."
How can evolution produce more complex organisms?
Might not be right, But I think that different chromosomes might make a more complexed organism. Hope this helps, I'm only in 6th Grade :D
How prokaryotes chromosomes differ from eukaryote?
A prokaryotic chromosome consists of a single molecule of DNA in the form of a closed loop. The chromosome is described as circular. A prokaryotic cell has only one chromosome. A eukaryotic chromosome is linear, not circular, in other words it has two ends, like a sausage. Each chromosome contains one molecule of DNA for the first half or so of interphase, then the DNA replicates, and the two DNA molecules remain together (as sister-chromatids) in the same chromosome for the rest of interphase. This does not happen in prokaryotic cells. Eukaryotic cells have more than onechromosome. A further difference: prokaryotic chromosomes consist only of a naked DNA molecule, but eukaryotic chromosomes also contain many molecules of proteins (mostly histones). The DNA is wound around these proteins.
What rhymes with complexed?
ex sex FEDex rolex
What is proteinated minerals in animal nutrition?
proteinated minerals are organic minerals those are complexed with proteins
Is the minerals that combined with a protein to form hemoglobin?
Iron is complexed by "Haem" units to make Haemoglobin.
Structure of Whenever you go shopping you always spend too much money?
complex
What cell is Chromatin found in?
Chromatin is found in every cell's nucleus. It contains DNA.
What is bound and unbound water?
water that is between sheets or ain't between sheets, complexed or non complexed. Peace out. bound water is nothing but water for crystallization, and unbound water is the moisture present in the sample. we can eaisly remove unbound water and find out its content by gravimetric analysis.
Who is the most complex Hindu deity who known for destructive power?
The most complex deity, Firstly i do not beleive in complexcity because even a single deity is not complex, if a deity is complexed he is not deity, deity never get complexed, the trinity is superior as according to its responsibility and hence all have their powers
Differences between eukaryotic cells and prokaryotic cells are .?
Eukaryotic cells have a true nucleus, bound by a double membrane. Prokaryotic cells have no nucleus. The purpose of the nucleus is to sequester the DNA-related functions of the big eukaryotic cell into a smaller chamber, for the purpose of increased efficiency. This function is unnecessary for the prokaryotic cell, because its much smaller size means that all materials within the cell are relatively close together. Of course, prokaryotic cells do have DNA and DNA functions. Biologists describe the central region of the cell as its "nucleoid" (-oid=similar or imitating), because it's pretty much where the DNA is located. But note that the nucleoid is essentially an imaginary "structure." There is no physical boundary enclosing the nucleoid.Eukaryotic DNA is linear; prokaryotic DNA is circular (it has no ends).Eukaryotic DNA is complexed with proteins called "histones," and is organized into chromosomes; prokaryotic DNA is "naked," meaning that it has no histones associated with it, and it is not formed into chromosomes. Though many are sloppy about it, the term "chromosome" does not technically apply to anything in a prokaryotic cell. A eukaryotic cell contains a number of chromosomes; a prokaryotic cell contains only one circular DNA molecule and a varied assortment of much smaller circlets of DNA called "plasmids." The smaller, simpler prokaryotic cell requires far fewer genes to operate than the eukaryotic cell.Both cell types have many, many ribosomes, but the ribosomes of the eukaryotic cells are larger and more complex than those of the prokaryotic cell. Ribosomes are made out of a special class of RNA molecules (ribosomal RNA, or rRNA) and a specific collection of different proteins. A eukaryotic ribosome is composed of five kinds of rRNA and about eighty kinds of proteins. Prokaryotic ribosomes are composed of only three kinds of rRNA and about fifty kinds of protein.The cytoplasm of eukaryotic cells is filled with a large, complex collection of organelles, many of them enclosed in their own membranes; the prokaryotic cell contains no membrane-bound organelles which are independent of the plasma membrane. This is a very significant difference, and the source of the vast majority of the greater complexity of the eukaryotic Cell. There is much more space within a eukaryotic cell than within a prokaryotic cell, and many of these structures, like the nucleus, increase the efficiency of functions by confining them within smaller spaces within the huge Cell, or with communication and movement within the Cell.Eukaryotic Cells are the largest Cells, while prokaryotic Cells are smaller than eukaryotic Cells. A eukaryotic Cell is about 10 times bigger than a prokaryotic Cell.Eukaryotic Cells have a bi-lipid-layer plasma membrane and an exterior glyco-callyx Cell Coat; prokaryotic Cells have a bi-lipid-layer plasma membrane and an exterior mostly cellulosic Cell Wall.A List:Prokaryotic cells:Most primitive, earliest form of lifeDo not have a pre-defined nucleusChromosomes are dispersed in the cytoplasmContain no membrane-bound organellesHave circular chromosomes and lack histone proteinsMost metabolically diverseSmall - typically 0.2-2.0 micrometers in diameterHave a primitive cytosketetal structures or don't have a cytoskeleton at allSmaller (70S) ribosomesDon't undergo meiosis but reproduce sexually by the transfer of DNA fragments through conjugationEukaryotic cells:More complex, evolved organsimsContain true nuclei in which chromosomes are compacted as chromatinContain membrane-bound organellesHave linear DNA and contain histone proteinsLarger - typically 10-100 micrometers in diameterHave a complex cytosketetonLarger (80S) ribosomReproduce sexually with the use of meiosis
