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Does the bio synthesis of ribosomal subunits occur in the nucleus?
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∙ 11y ago
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Where does eukaryotic ribosomal RNA synthesis occur?
The part of the eukaryotic nucleus where ribosomal rna is synthesized is the Nucleolus.
How do ribosomes get to the ER from the nucleus?
A ribosome contains RNA and proteins. The following description applies to eukaryotes (plants, animals, and fungi). (The ribosomes of prokaryotes (bacteria) and mitochondria are essentially similar but differ in detail, and no nucleus is involved.) A ribosome in eukaryotes, including humans, contains four different molecules of rRNA (ribosomal RNA) and about 80 protein molecules. The proteins are synthesized in the cytoplasm, then transported through nuclear pores into the nucleus. The rRNA molecules are synthesized directly from genes in the nucleus. The nucleolus is a region of the nucleus in which three of these rRNA genes occur. Inside the nucleus the RNA and protein molecules are assembled into two subunits, which leave the nucleus, again through nuclear pore complexes. Once in the cytoplasm, the two subunits are combined to form the functional ribosome.
What holds the cells DNA?
Nucleus - holds genomic DNA in eukaryotes. The nucleus is the most conspicuous organelle found in a eukaryotic cell. It houses the cell's chromosomes and is the place where almost all DNA replication and RNA synthesis occur.
Where is the first step of protein synthesis occur?
on the ribosomes in the cytoplasm of the cell
Where does plasma protein synthesis occur?
All plasma protein synthesis occurs in the liver.
Where does eukaryotic ribosomal RNA synthesis occur?
The part of the eukaryotic nucleus where ribosomal rna is synthesized is the Nucleolus.
Where in protein synthesis does transcription occur?
In it's very earliest phase; that of the synthesis of messenger Rna.
Where does initiation of translation occur?
An initiation complex for translation forms by the assembly of the ribosomal subunits and initiator tRNA (met-tRNA) at the start codon on the mRNA.
Three cellular functions that occur in the nucleus?
DNA synthesis, RNA synthesis and cell reproduction
How do ribosomes get to the ER from the nucleus?
A ribosome contains RNA and proteins. The following description applies to eukaryotes (plants, animals, and fungi). (The ribosomes of prokaryotes (bacteria) and mitochondria are essentially similar but differ in detail, and no nucleus is involved.) A ribosome in eukaryotes, including humans, contains four different molecules of rRNA (ribosomal RNA) and about 80 protein molecules. The proteins are synthesized in the cytoplasm, then transported through nuclear pores into the nucleus. The rRNA molecules are synthesized directly from genes in the nucleus. The nucleolus is a region of the nucleus in which three of these rRNA genes occur. Inside the nucleus the RNA and protein molecules are assembled into two subunits, which leave the nucleus, again through nuclear pore complexes. Once in the cytoplasm, the two subunits are combined to form the functional ribosome.
Ribosomal rna brings what to ribosomes for protein synthesis?
The synthesis of proteins takes two steps: transcription and translation. Transcription takes the information encoded in DNA and encodes it into mRNA, which heads out of the cell’s nucleus and into the cytoplasm. During translation, the mRNA works with a ribosome and tRNA to synthesize proteins. RNA polymerase is necessary for the process to occur.
Do both DNA and RNA synthesis occur in the nucleus?
Yes, they [both] do. In particular, nuclear Rna synthesis takes place in the Nucleoli.
What is the funtion of ribosomal RNA?
ribosomal RNA (or rRNA) is a part of the ribosomes usually found on the Endoplasmic Reticulum. Hope this helps! rRNA helps build the proteins. It decodes mRNA into amino acids and provides peptide bonds for amino acids.
What holds the cells DNA?
Nucleus - holds genomic DNA in eukaryotes. The nucleus is the most conspicuous organelle found in a eukaryotic cell. It houses the cell's chromosomes and is the place where almost all DNA replication and RNA synthesis occur.
What are the two main stages in the synthesis of proteins and where does each occur?
The two main stages in the synthesis of proteins are transcription and translation. Transcription occurs inside the nucleus and translation will take place in the ribosomes within the cytoplasm.
How does a nucleus?
In Biology, the nucleus of a cell acts as a storage center for DNA in the cell. Think of the nucleus as a storage for the blueprints (the DNA) of the cell rather than a brain. The DNA is stored inside the nucleus until needed for DNA replication. It is then extracted from the nucleus through pores in the membrane and into the endoplasmic reticulum where the DNA replication and later the protein synthesis occur.
Where is the first step of protein synthesis occur?
on the ribosomes in the cytoplasm of the cell
