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ch16.2

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RNA pol in eukaryotes does not bind directly to promoter sequence by inself
Proteins called what initiate eukar. transcription basal transcription factors
Basal trans factors do what match the enzyme with the appropriate promoter region in DNA
Basal transcrip factors's function is similar to what in bacteria? sigma proteins
Eukaryotes have 3 types of rna pol: pol 1, pol 2, pol3
only pol 2 does what transcribes the genes that code for proteins--meaning it produces mRNa
many of the eukaryot promoters recognize by RNA pol 2 include the sequence called TATA box located 30 base pairs upstream
in eukaryotes the conversion of info in DNA sequences to mRNA sequences does not occur directly, eukar. cells must dispose of of certain sequences inside the genes and then combine the separated coding sections into a whole
Introns are sectitons of genes that are not represented in the final mRna product. As a result, eukaryotic genes are much larger than their corresponding mature RNA transcripts
The transcription of eukaryotic genes by RNA pol generates a primary RNA transcript that contains both the exons and intron regions.
As transcription proceeds, the introns are removed from the growing RNA strand by a process splicing
The 5' cap serves as a recognition signal for the translation machinery, and the poly (A) tail extends the life span of an mRNA by protecting the message from degradation by ribonucleases in the cytosol.
Created by: natu
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