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How does a Tata box helps position rna polymerase. In a eukaryotic cell?
The TATA box seems to help position RNA polymerase by marking a point just before the point at which transcription begins.
Where is the promoter located within a gene?
The promoter is located at the beginning of a gene, before the coding region that specifies the protein or RNA molecule. It is a region of DNA that initiates the process of gene transcription.
Why does the promoter position differ between prokaryotes and eukaryotes?
In prokaryotes, the promoter is made up of two sequences at -10 and -35. Eukaryotic promoters are diverse and difficult to characterize, they lie upstream of the gene and have regulatory elements that are several kilobases away from the start site.
What are three differences between transcription in prokaryotes and transcription in eukaryotes?
In prokaryotes, transcription occurs in the cytoplasm since they lack a nucleus, while in eukaryotes, transcription occurs in the nucleus. Prokaryotic transcription is often coupled with translation, meaning ribosomes can start translating mRNA even before transcription is complete, whereas in eukaryotes, transcription and translation are spatially and temporally separated. Prokaryotic mRNA does not typically undergo extensive processing (such as splicing or capping) after transcription, whereas eukaryotic mRNA is extensively processed before being translated.
What happens right before RNA polymerase begins to work?
The DNA double helix unwinds.
How does a Tata box helps position rna polymerase. In a eukaryotic cell?
The TATA box seems to help position RNA polymerase by marking a point just before the point at which transcription begins.
Where is the promoter located within a gene?
The promoter is located at the beginning of a gene, before the coding region that specifies the protein or RNA molecule. It is a region of DNA that initiates the process of gene transcription.
Why does the promoter position differ between prokaryotes and eukaryotes?
In prokaryotes, the promoter is made up of two sequences at -10 and -35. Eukaryotic promoters are diverse and difficult to characterize, they lie upstream of the gene and have regulatory elements that are several kilobases away from the start site.
What are three differences between transcription in prokaryotes and transcription in eukaryotes?
In prokaryotes, transcription occurs in the cytoplasm since they lack a nucleus, while in eukaryotes, transcription occurs in the nucleus. Prokaryotic transcription is often coupled with translation, meaning ribosomes can start translating mRNA even before transcription is complete, whereas in eukaryotes, transcription and translation are spatially and temporally separated. Prokaryotic mRNA does not typically undergo extensive processing (such as splicing or capping) after transcription, whereas eukaryotic mRNA is extensively processed before being translated.
Where does Dna replication and transcription take place?
DNA replication takes place in the nucleus of eukaryotic cells and in the cytoplasm of prokaryotic cells. Transcription takes place in the nucleus of eukaryotic cells, where DNA is transcribed into messenger RNA (mRNA) before it is translated into proteins.
What happens right before RNA polymerase begins to work?
The DNA double helix unwinds.
In which organelle is DNA kept and RNA transcript?
DNA is kept in the nucleus, while RNA transcription occurs in the nucleus before the mRNA moves to the ribosomes in the cytoplasm for translation.
What are the key differences between prokaryotic and eukaryotic translation processes?
In prokaryotic translation, the process occurs in the cytoplasm and can start before transcription is complete. Eukaryotic translation occurs in the cytoplasm and on ribosomes attached to the endoplasmic reticulum, and it requires the mRNA to be fully transcribed before translation can begin. Additionally, prokaryotic cells have a simpler translation process with fewer initiation factors compared to eukaryotic cells.
The sections of an mRNA molecule that are removed before translation are?
The sections of an mRNA molecule that are removed before translation are called introns. This process is known as splicing, where introns are removed and the remaining sections, called exons, are joined together to form the mature mRNA molecule. This ensures that only the coding regions of the gene are included in the final mRNA sequence for translation.
What happens right before transcription begins?
RNA polymerase is guided to the correct place -apex
How is bacterial translation different from eukaryotic translation?
Bacterial translation occurs in the cytoplasm and has fewer post-translational modifications. Eukaryotic translation occurs in the cytoplasm and on the endoplasmic reticulum, and involves more complex regulatory mechanisms and additional processing steps.
Regulatory proteins can exert ther effects when before transcription during transcription after transcription during translation or all of these?
during translation
