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Does eukaryotic transcription begin before the promoter clearance?
Wiki User
∙ 14y ago
No, Eukayotic transcription begins after promoter clearance. Promoter clearance just prepares the transcription initiation complex to begin elongation. Promoter clearance does not produce any functional gene.
Wiki User
∙ 14y ago
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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.
The sections of an mRNA molecule that are removed before translation are?
Sections of RNA molecules that are removed before a eukaryotic gene becomes functional introns. The signal in DNA that indicates to enzymes where to bind to make RNA is the promoter.
How is bacterial translation different from eukaryotic translation?
Bacteria can begin translation before transcription has terminated.
What must happen to the DNA before transcription can take place?
It must unwind and separate for transcription to occur
What must happen to DNA strands before transcription can begin?
DNA strands must unwind and the two strands must separate prior to transcription beginning. Once transcription is complete, the two strands join back together.
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.
The sections of an mRNA molecule that are removed before translation are?
Sections of RNA molecules that are removed before a eukaryotic gene becomes functional introns. The signal in DNA that indicates to enzymes where to bind to make RNA is the promoter.
How is bacterial translation different from eukaryotic translation?
Bacteria can begin translation before transcription has terminated.
Why is gene regulation important in eukaryotes?
Gene regulation can occur in eukaryotic cells before, during, and after transcription.
Regulatory proteins can exert ther effects when before transcription during transcription after transcription during translation or all of these?
during translation
What must happen to the DNA before transcription can take place?
It must unwind and separate for transcription to occur
What must happen to DNA strands before transcription can begin?
DNA strands must unwind and the two strands must separate prior to transcription beginning. Once transcription is complete, the two strands join back together.
What is CLNC DEL on the airport diagram?
Clearance Delivery is contacted to receive IFR clearance or VFR departure instructions (departures clearance) . Pilots would do this after listening to the ATIS and before contacting ground for their taxi clearance.
Differences between eukaryotic and prokaryotic translation?
Prokaryotes have a single circular chromosome, wherease eukaryotes have many bar shaped chromsomes. Also, prokaryotes are single cell organisms (there are some single cell eukaryotes, but never multicellular prokaryotes). Because multicellular organisms have so many cells, (such as humans), their chromsomes have to contain a lot of information to provide details to the cell so it can carry out it's job. In eukaryotic cell DNA there are introns and exons. When a gene is needed to be expressed, the cell must remove the information in the sequence that is not needed; ie, the introns. It is believed that the same DNA sequence can actually code for more than one gene because of the cells ability to remove introns and keep exons. for example, the word 'strawberry' contains the code for three words: straw, berry, strawberry. by removing peices of the word, you are left with information that provides a different set of instructions. Prokaryotes do not have introns and exons.
What structure in a eukaryotic cell must be divided before the cell can divide?
dna
If a eukaryotic gene is inserted in prokaryotic cellwould gene expressed its characters?
Yes. Both eukaryotes and prokaryotes use the same system of codons (they speak the same 'language'). For example, GGG will be translated to glycine in a human and in E. coli bacteria. Therefore, as long as the eukaryotic gene is attached to the appropriate prokaryotic gene regulation elements, a prokaryotic cell will be able to translate and express the gene. The most common method to accomplish this is to put the eukaryotic gene in a 'vector' (most commonly a plasmid of bacterial origin), and then transform the bacteria with this vector.This is how humulin (human insulin) was first prepared by recombinant DNA technology. The eukaryotic genetic information (human DNA) was inserted into prokaryotic plasmids, and the bacteria then synthesized insulin.
Does transcription require DNA?
No, Transcription does not require Replication to take place first. Transcription is simply the process of making mRNA from DNA so that the ribosomes have directions to make proteins. Replication is the complete copy of the genetic material in the host chromosome which would occur before the cell divides.
