Biochemistry: The Molecular Basis of Life
6th Edition
ISBN: 9780190209896
Author: Trudy McKee, James R. McKee
Publisher: Oxford University Press
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Chapter 18, Problem 75TQ
Summary Introduction
To review:
The reason behind not skipping the transcription step and using DNA (deoxyribonucleic acid), directlyfor protein synthesis.
Introduction:
Gene can be defined as a sequence of
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Question 2:
Part a: Complete the table describing different components of intron removal from mRNA. Nu:, X and Y refer to B-type chemistry shown on the previous page. (YELLOW table shown)
Part b: Complete the table describing different components of group I self-splicing intron removal from 26S rRNA in Tetrahymena. (BLUE table shown)
Part c: Draw the intron with an all atom structure for Branchpoint A after intron removal from mRNA
Part d: Draw the Group I self-splicing intron with an all atom structure for the Guanosine cofactor after intron removal from 26S rRNA in Tetrahymena.
Question 14
A large RNA–protein complex responsible for RNA splicing is called:
Question 14 options:
Spliceosome
Splicing complex
Exon-intron processor
Transcription complex
Question 15
Shortly after transcriptional initiation by RNA polymerase II, a methylated nucleoside (7-methylguanosine, m7G) is added and linked by a 5′–5′ phosphodiester bond to the first 5′ nucleotide, What is this process called?
Question 15 options:
3' Capping
5' Capping
Polyadenylation
Splicing
Question 16
During polyadenylation, the RNA is cleaved at a specific site. The site is:
Question 16 options:
15–30 nucleotides downstream of the AAUAAA sequence
15–30 nucleotides upstream of the AAUAAA sequence
at AAUAA sequence
At…
True or False: there are three different start codons in the genetic code
Chapter 18 Solutions
Biochemistry: The Molecular Basis of Life
Ch. 18 - Prob. 1QCh. 18 - Prob. 2QCh. 18 - Prob. 3QCh. 18 - Prob. 4QCh. 18 - Prob. 5QCh. 18 - Prob. 1RQCh. 18 - Prob. 2RQCh. 18 - Prob. 3RQCh. 18 - Prob. 4RQCh. 18 - Prob. 5RQ
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