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Ribosomes are large ribonucleoprotein particles that contain more Rna than protein, and dissociate into large and small subunits, one of each. In the following, S stands for the Sedimentation rate as determined by the rate of 'settlement' of particles of various SIZES during Centrifugation.
Smaller, lighter particle-sizes take longer to take notice of the centrifuge's force and tend to stay at the top of the Centrifuge Tube, while the larger and heavier particle-sizes are found / located in stratified layers at the bottom of this tube.
For mammals the 80 S ribosome has a mass of 4.2 million Daltons [the size of a Dalton is just about the same size as the mass of an average small Atom] and consists of 60% Rna.
The 80 S ribosome dissociates into the 60 S subunit - made from a 28 S [4718 bases] Rna, and a 5.8 S [160 bases] Rna, and a 5 S [120 bases] Rna. Also, 49 proteins are involved.
Secondly, the other rRna subunit is the 40 S: it contains an 18 S [1874 bases] rRna subunit and 33 proteins.
What else can I help you with?
Which structure contains RNA and protein and is the site where ribosomes are made?
The nucleolus is the structure that contains RNA and proteins and is the site where ribosomes are made. Ribosomal RNA (rRNA) is synthesized in the nucleolus, and ribosomal proteins are imported from the cytoplasm to assemble with rRNA to form ribosomes.
Which of the following compounds require the presence of the nuclear pores to move between the cytoplasm and the interior of the nucleus?
Large molecules such as proteins, RNA molecules, and ribosomal subunits require the presence of nuclear pores to move between the cytoplasm and the interior of the nucleus. These molecules are too large to passively diffuse through the nuclear envelope and rely on active transport mechanisms mediated by nuclear pores.
How do you use ribosomes and RNA in the same sentence?
Ribosomes are where RNA is translated into proteins in a cell. RNA molecules serve as the templates for protein synthesis by interacting with ribosomes, which catalyze the bonding of amino acids to form proteins.
What are ribosomes composed of?
Ribosomes are composed of ribosomal RNA (rRNA) and protein molecules. The rRNA molecules help in the assembly and functioning of the ribosomes, while the protein molecules support the structural integrity of the ribosomes and aid in protein synthesis.
What part of the cell makes prorein?
Proteins are made by ribosomes in the cell. Ribosomes can be found in the cytoplasm or attached to the endoplasmic reticulum. They translate the genetic information from messenger RNA into protein molecules.
Which structure contains RNA and protein and is the site where ribosomes are made?
The nucleolus is the structure that contains RNA and proteins and is the site where ribosomes are made. Ribosomal RNA (rRNA) is synthesized in the nucleolus, and ribosomal proteins are imported from the cytoplasm to assemble with rRNA to form ribosomes.
Molecules bring to the ribosomes?
Messenger RNA (mRNA) molecules bring the genetic code from the DNA in the nucleus to the ribosomes in the cytoplasm. Transfer RNA (tRNA) molecules bring amino acids to the ribosomes during protein synthesis. Ribosomes use these molecules to build proteins according to the mRNA code.
What structure is responsible for producing new molecules?
The cell's ribosomes are responsible for producing new molecules through protein synthesis. Ribosomes read the instructions carried by messenger RNA (mRNA) and assemble amino acids into proteins.
Which of the following compounds require the presence of the nuclear pores to move between the cytoplasm and the interior of the nucleus?
Large molecules such as proteins, RNA molecules, and ribosomal subunits require the presence of nuclear pores to move between the cytoplasm and the interior of the nucleus. These molecules are too large to passively diffuse through the nuclear envelope and rely on active transport mechanisms mediated by nuclear pores.
How do you use ribosomes and RNA in the same sentence?
Ribosomes are where RNA is translated into proteins in a cell. RNA molecules serve as the templates for protein synthesis by interacting with ribosomes, which catalyze the bonding of amino acids to form proteins.
Which of the classes of RNA molecules is linked with proteins in forming the large and small subunits of a cytoplasmic structure?
Ribosomal RNA (rRNA) is the class of RNA molecules that is linked with proteins to form the large and small subunits of ribosomes, which are the cytoplasmic structures responsible for protein synthesis in cells.
What cell organelle has scattered RNA molecules?
Rough endoplasmic reticulum is studded with ribosomes. Ribosomes are essentially bundles of rRNA, or ribosomal RNA.
What are the 3 kinds of RNA?
1) mRNA/messenger RNA: RNA molecules that carry copies of the DNA "codes" to the rest of the cell 2) rRNA/ribosomal RNA: makes up the major part of the ribosomes 3) tRNA/transfer RNA: transfers amino acids to ribosomes during protein synthesis
What are ribosomes composed of?
Ribosomes are composed of ribosomal RNA (rRNA) and protein molecules. The rRNA molecules help in the assembly and functioning of the ribosomes, while the protein molecules support the structural integrity of the ribosomes and aid in protein synthesis.
What part of the cell makes prorein?
Proteins are made by ribosomes in the cell. Ribosomes can be found in the cytoplasm or attached to the endoplasmic reticulum. They translate the genetic information from messenger RNA into protein molecules.
What subcellular structure is involved in translation?
In translation (RNA to Protein) a ribosome attaches to an mRNA strand and uses the mRNA to create a protein. There are other types of RNA and protein that can modify the mRNA strand but ribosomes are the main structure involved in translation.
Found in the nucleus produces ribosomes and RNA?
The nucleolus is the structure found in the nucleus that is responsible for producing ribosomes and RNA. Ribosomes are essential for protein synthesis, and RNA is the genetic material involved in various cellular processes.
