Lecture 31 Questions

Lecture 31 Questions - 1. What are the three general steps...

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1. What are the three general steps or phases of transcription? Initiation, Elongation, and Termination. 2. What is a promoter and what does it have to do with the initiation of transcription? What is the direction that a DNA template is read in transcription? What is the direction that the corresponding RNA is formed? A promoter is the specific sequence of nucleotides along the DNA that marks where RNA polymerase attaches and initiates transcriptions. The direction of transcription is referred to “downstream” 3. What is RNA processing? Specifically, what are the two steps in which a pre-mRNA is converted to an mRNA in a eukaryotic cell? Describe what is involved in each step and the apparent function of each step. Structurally, how does guanosine triphosphate differ in structure from adenosine triphosphate? RNA processing is the addition of a 5’ cap and a Poly-Adenine tail to a pre-mRNA molecule, so that the mRNA can be exported from the nucleus easier and so that hydrolytic enzymes don’t degrade the mRNA. The two steps of processing are removing the introns of RNA strands and splicing the exons.
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Lecture 31 Questions - 1. What are the three general steps...

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