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In prokaryotes a cap and tail are placed on the ends of an mrna transcript to prevent the mrna from being broken down?
Actually, in prokaryotes, a cap and tail are not added to the mRNA transcript. Instead, prokaryotic mRNA is directly translated without modification. This is in contrast to eukaryotes, where mRNA undergoes modification at the 5' end with a cap and at the 3' end with a poly-A tail to protect it from degradation.
What is the molecule transcribed from DNA called?
initially its hrRNA or pre-mRNA. (same thing different name). this then undergoes some modification like splicing, capping and polyadenalation to make mRNA which is then translated into protein.
Is removal of intervening sequences a modification which is likely to happen to the mRNA in eukaryotic cell?
Yes, removal of intervening sequences (introns) is a common modification that occurs to pre-mRNA in eukaryotic cells through a process called splicing. This process removes the introns and joins the coding regions (exons) together to form mature mRNA that can be translated into proteins.
True or false In prokaryotes a cap and tail are plaved on the of an mRNA transcript to prevent the mRNA from being down?
False. In prokaryotes the transcript is immediately translated into proteins. This complex has its own technical name which escapes me for the moment. There is no modification of the gene needed as it is not leaving the nucleus the prokaryote does not have.
What process occurs when the DNA of a gene makes an mRNA molecule?
Transcription. In eukaryotes, the DNA is transcribed into pre-mRNA which then undergoes modification (involving the loss of introns). The newly polished mRNA is then transported out of the nucleus, into the cytoplasm to undergo translation by means of the ribosome. The ribosome translates the mRNA by pairing it with tRNA producing and amino acid sequence. The amino acid sequence is then shaped into a protein that is used in numerous ways to perform tasks throughout the organism.
In prokaryotes a cap and tail are placed on the ends of an mrna transcript to prevent the mrna from being broken down?
Actually, in prokaryotes, a cap and tail are not added to the mRNA transcript. Instead, prokaryotic mRNA is directly translated without modification. This is in contrast to eukaryotes, where mRNA undergoes modification at the 5' end with a cap and at the 3' end with a poly-A tail to protect it from degradation.
How does pre mRNA become mRNA?
Pre-mRNA undergoes a process called RNA splicing, where non-coding regions (introns) are removed and the coding regions (exons) are joined together. This forms mature mRNA, which can then be translated by ribosomes into proteins.
What is the molecule transcribed from DNA called?
initially its hrRNA or pre-mRNA. (same thing different name). this then undergoes some modification like splicing, capping and polyadenalation to make mRNA which is then translated into protein.
Is removal of intervening sequences a modification which is likely to happen to the mRNA in eukaryotic cell?
Yes, removal of intervening sequences (introns) is a common modification that occurs to pre-mRNA in eukaryotic cells through a process called splicing. This process removes the introns and joins the coding regions (exons) together to form mature mRNA that can be translated into proteins.
How is mRNA stabilized before leaving the nucleus for translation?
mRNA is stabilized in the nucleus through the addition of a 5' 7-methylguanosine cap and a 3' poly-A tail. These modifications protect the mRNA from degradation and signal for its export to the cytoplasm for translation. Additionally, RNA-binding proteins assist in stabilizing mRNA and regulating its processing.
Know the correct order of the steps of protein symtem?
The correct order of protein synthesis is transcription (DNA is copied into mRNA), translation (mRNA is decoded to build a protein), and post-translational modification (protein may undergo changes like folding or addition of functional groups).
What is the process of post-transcriptional modification?
Post-transcriptional modification is a process in cell biology by which, in eukararyotic cells, primary transcript RNA is converted into mature RNA. A notable example is the conversion of precursor messenger RNA into mature messenger RNA (mRNA), which includes splicing and occurs prior to protein synthesis. This process is vital for the correct translation of the genomes of eukaryotes as the human primary RNA transcript that is produced as a result of transcription contains both exons, which are coding sections of the primary RNA transcript.
True or false In prokaryotes a cap and tail are plaved on the of an mRNA transcript to prevent the mRNA from being down?
False. In prokaryotes the transcript is immediately translated into proteins. This complex has its own technical name which escapes me for the moment. There is no modification of the gene needed as it is not leaving the nucleus the prokaryote does not have.
What does a nucleus do in protein production and modification?
The nucleus is where DNA which codes for proteins is stored. The DNA is transcribed to make mRNA in the nucleus. The mRNA then leaves the nucleus where it is translated on the ribosomes into a series of amino acids which make up a protein. So the role of the nucleus is to tell the cell which proteins to make.
What is the process of forming RNA from DNA?
Transcription is the process of forming RNA from DNA. During transcription, enzymes read one strand of the DNA double helix and synthesize a complementary RNA molecule. This RNA molecule then undergoes processing and modification to become mature RNA.
What process occurs when the DNA of a gene makes an mRNA molecule?
Transcription. In eukaryotes, the DNA is transcribed into pre-mRNA which then undergoes modification (involving the loss of introns). The newly polished mRNA is then transported out of the nucleus, into the cytoplasm to undergo translation by means of the ribosome. The ribosome translates the mRNA by pairing it with tRNA producing and amino acid sequence. The amino acid sequence is then shaped into a protein that is used in numerous ways to perform tasks throughout the organism.
What is the function of snRNP?
The action of snRNPs is essential to the removal of introns from pre-mRNA, a critical aspect of post-transcriptional modification of RNA, occurring only in the nucleus of eukaryotic cells. Additionally, U7 snRNP is not involved in splicing at all, as U7 snRNP is responsible to process the 3′ stem-loop of histone pre-mRNA.
