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While a eukaryote has a nucleus, the prokaryotic does not. The eukaryotic cell will wrap it's dna around histones, which are a type of protein. The prokaryotic cell combines multiple proteins which fold and condense it's DNA, which then coil up and wrap around the HU protein.
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What is the r role of 23S rRNA of 50S RNA?
The 23S rRNA is an essential component of the 50S ribosomal subunit in prokaryotic cells. It has peptidyl transferase activity, which catalyzes the formation of peptide bonds during protein synthesis. Additionally, it plays a role in maintaining the overall structural integrity of the ribosome.
Ribosomes are composed largely of protein and?
Ribosomes are composed largely of protein and ribosomal RNA (rRNA). They are responsible for protein synthesis in the cell by reading the messenger RNA (mRNA) and translating it into a specific sequence of amino acids to form a protein. Ribosomes exist in both prokaryotic and eukaryotic cells.
In what unit of a eukaryotic cell are ribosomes made?
Ribosomes are made in the nucleolus of a eukaryotic cell. The nucleolus is a specialized structure within the cell nucleus where ribosomal RNA (rRNA) is synthesized and ribosomal subunits are assembled.
Which cell structure is located within the nucleus of a eukaryotic cell?
Nucleolus is in the nucleus. Chromosomes are also in the nucleus.
What type of RNA is most abudant?
Ribosomal RNA (rRNA) is the most abundant type of RNA in cells. It is a key component of ribosomes, the cellular machinery responsible for protein synthesis.
Difference between kozak sequence and Shine-Dalgarno sequence?
The Kozak sequence is a short sequence surrounding the start codon in eukaryotic mRNA that helps in the initiation of translation. The Shine-Dalgarno sequence is a purine-rich sequence in bacterial mRNA that helps in ribosome binding and initiation of translation by base pairing with the 16S rRNA in the small ribosomal subunit. Both sequences play crucial roles in initiating protein synthesis in their respective organisms.
Where is trna produced?
tRNA is produced primarily in the nucleus of eukaryotic cells and in the cytoplasm of prokaryotic cells. It is transcribed from DNA by RNA polymerase III in eukaryotes and by RNA polymerase in prokaryotes.
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
What is the r role of 23S rRNA of 50S RNA?
The 23S rRNA is an essential component of the 50S ribosomal subunit in prokaryotic cells. It has peptidyl transferase activity, which catalyzes the formation of peptide bonds during protein synthesis. Additionally, it plays a role in maintaining the overall structural integrity of the ribosome.
What are the differences between prokaryotic cells and eukaryote cells?
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Ribosomes are composed largely of protein and?
Ribosomes are composed largely of protein and ribosomal RNA (rRNA). They are responsible for protein synthesis in the cell by reading the messenger RNA (mRNA) and translating it into a specific sequence of amino acids to form a protein. Ribosomes exist in both prokaryotic and eukaryotic cells.
In what unit of a eukaryotic cell are ribosomes made?
Ribosomes are made in the nucleolus of a eukaryotic cell. The nucleolus is a specialized structure within the cell nucleus where ribosomal RNA (rRNA) is synthesized and ribosomal subunits are assembled.
Why do researchers use rRNA in investigations of relationships between taxa that diverged hundreds of millions of years ago?
DNA coding for rRNA changes relatively slowly
Where is the nucleolus in a Eukaryotic cell?
The nucleolus is typically found within the nucleus of a eukaryotic cell. It is a distinct region where ribosomal RNA (rRNA) synthesis and assembly of ribosomal subunits occur. The nucleolus appears as a dark, dense region when viewed under a microscope.
Which cell structure is located within the nucleus of a eukaryotic cell?
Nucleolus is in the nucleus. Chromosomes are also in the nucleus.
What type of RNA is most abudant?
Ribosomal RNA (rRNA) is the most abundant type of RNA in cells. It is a key component of ribosomes, the cellular machinery responsible for protein synthesis.
Are eukaryotic ribsomes composed of 60S and 40S subunits?
Yes, eukaryotic ribosomes are composed of a large 60S subunit and a small 40S subunit that come together to form the functional 80S ribosome. These subunits are made up of both RNA and protein components, with the 60S subunit containing 3 types of rRNA molecules and over 49 proteins, while the 40S subunit contains 1 type of rRNA and around 33 proteins.
