PRESCOTT'S MICROBIOLOGY
11th Edition
ISBN: 2818440045677
Author: WILLEY
Publisher: MCG
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Textbook Question
Chapter 15.3, Problem 1MI
What functions are served by the 5′ cap and the 3′ poly-A tail?
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Which of the following sequences is most likely to form a beta-turn? Explain why?
Sequence A: Ser-Pro-Asn-Val
Sequence B: Gly-Ser-Asn-Pro
Sequence C: Ser-Asn-Gly-Val
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5'-CAU-3' and 3'-GUC-5'?
How many codons would be possible in a triplet code if only three bases (A, C, and U) were used?
Chapter 15 Solutions
PRESCOTT'S MICROBIOLOGY
Ch. 15.2 - Prob. 1CCCh. 15.2 - Prob. 2CCCh. 15.2 - Prob. 3CCCh. 15.2 - Prob. 4CCCh. 15.2 - Prob. 5CCCh. 15.3 - What functions are served by the 5 cap and the 3...Ch. 15.3 - Retrieve, Infer, Apply What elements in archaeal...Ch. 15.3 - Prob. 2CCCh. 15.3 - Prob. 3CCCh. 15.4 - Prob. 1CC
Ch. 15.4 - Prob. 2CCCh. 15.4 - Prob. 3CCCh. 15.5 - Retrieve, Infer, Apply List two similarities and...Ch. 15.5 - Prob. 2CCCh. 15.5 - Retrieve, Infer, Apply How are cis-encoded RNAs,...Ch. 15 - Prob. 1RCCh. 15 - Prob. 2RCCh. 15 - Prob. 3RCCh. 15 - Prob. 4RCCh. 15 - Prob. 5RCCh. 15 - Prob. 6RCCh. 15 - Prob. 7RCCh. 15 - Prob. 8RCCh. 15 - Prob. 9RCCh. 15 - Prob. 1ALCh. 15 - All of the subunits in bacterial RNA polymerases...Ch. 15 - Would you expect that one day microbiologists...Ch. 15 - In the chapter opening story, it was stated that...Ch. 15 - Prob. 5AL
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- What is the significance of the terminal inverted repeats oftransposons?arrow_forward1.) What do the first four letters represent in the polypeptide sequence of SARS-CoV-2 surface glycoprotein. 2) Draw the structure of the first 4 amino acids in the polypeptide sequence of SARS CoV-2 surface glycoprotein. 3) What amino acid is encoded by the first 3-letter DNA sequence in proteins? Identify and discuss start and stop codons.arrow_forwardGiven that there are about 20,000 human genes, how can human cells make 75,00o-100,000 different proteins? Distinguish between missense and nonsense. Compare and contrast between insertions and deletions. Why are these called “frameshift” mutations? What are thymine dimers? What causes them?arrow_forward
- Which base pairings account for wobble at the third codon–anticodon position?arrow_forwardBy base-pair substitution, what are all the synonymouschanges that can be made starting with the codon CGG?arrow_forwardWhy are there no Pol I mutants that completely lack 5′ → 3′ exonucleaseactivity?arrow_forward
- For the ovalbumin gene where would the 5′ untranslated region and 3′ untranslated regions be located in the DNA and in the RNA?arrow_forwardWhat structural change occurs in the DNA when an “open” transcription initiation complex is formed?arrow_forward5'......TACTGCCCATGCCCAGAGAGAAAGCGCAGACGCGTCTAAactgt... 3' a). (10 points). In the above sequences, the open reading frame is indicated by alternating non-underlined and underlined triplets. Please use the codon table to deduce the amino acid sequence for the region shown in the wildtype protein. Wildtype AA sequence for the region around mutation #1: Wildtype AA sequence for the region around mutation #2: b). (10 points). Please make predictions what molecular change mutation #1 and mutation #2 cause. c). (5 points). Which mutation is more likely to abrogate the protein function? Why?arrow_forward
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