Essentials of Genetics (9th Edition) - Standalone book
9th Edition
ISBN: 9780134047799
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino
Publisher: PEARSON
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Textbook Question
Chapter 12, Problem 18PDQ
Describe the structure of RNA polymerase in bacteria. What is the core enzyme? What is the role of the σ subunit?
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Chapter 12 Solutions
Essentials of Genetics (9th Edition) - Standalone book
Ch. 12 - CASE STUDY | A drug that sometimes works A...Ch. 12 -
CASE STUDY | A drug that sometimes works
A...Ch. 12 -
CASE STUDY | A drug that sometimes works
A...Ch. 12 - HOW DO WE KNOW? In this chapter, we focused on the...Ch. 12 - Review the Chapter Concepts list on p. 215. These...Ch. 12 - In studies of frameshift mutations, Crick,...Ch. 12 -
4. The mRNA formed from the repeating...Ch. 12 - In studies using repeating copolymers, AC......Ch. 12 - Prob. 6PDQCh. 12 - Prob. 7PDQ
Ch. 12 -
8. When the amino acid sequences of insulin...Ch. 12 - Prob. 9PDQCh. 12 - Why doesn't polynucleotide phosphorylase (Ochoa's...Ch. 12 - Refer to Table 12.1. Can you hypothesize why a...Ch. 12 -
12. Predict the amino acid sequence produced...Ch. 12 - A short RNA molecule was isolated that...Ch. 12 - A glycine residue exists at position 210 of the...Ch. 12 - Shown here is a theoretical viral mRNA sequence...Ch. 12 -
16. Most proteins have more leucine than...Ch. 12 - Define the process of transcription. Where does...Ch. 12 - Describe the structure of RNA polymerase in...Ch. 12 - In a written paragraph, describe the abbreviated...Ch. 12 - Messenger RNA molecules are very difficult to...Ch. 12 - One form of posttranscriptional modification of...Ch. 12 - In a mixed copolymer experiment, messages were...Ch. 12 -
23. Shown in this problem are the amino acid...Ch. 12 - Alternative splicing is a common mechanism for...Ch. 12 - The genetic code is degenerate. Amino acids are...
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- Describe the structure of the bacterial RNA polymerase holoenzyme.arrow_forwardThere are 3 RNA polymerases in eukaryotes. Write a sentence about the function of each. Which is responsible for most protein-coding proteins?arrow_forwardBriefly describe two of the tree functions of RNA polymerasearrow_forward
- RNA polymerase from E. coli (core enzyme alone) has all of the following properties except: a)requires all four ribonucleoside triphosphates and a DNA template. b)can extend an RNA chain and initiate a new chain. c)recognizes specific start signals in DNA. d)produces an RNA polymer that begins with a 5'-triphosphate. e)is required for the synthesis of mRNA, rRNA, and tRNA in E. coli.arrow_forwardIn bacterial genes, as soon as any partial mRNA transcript is produced by the RNA polymerase system, the ribosome assembles on it and starts translating. Draw a diagram of this process, identifying 5′ and 3′ ends of mRNA, the COOH and NH2 ends of the protein, the RNA polymerase, and at least one ribosome. Why couldn’t this system work in eukaryotes?arrow_forwardBelow is a template strand of DNA. Assume the transcription start site is outside of this sequence so that the whole sequence is transcribed. After the mRNA is made, what amino acid sequence would be translated from this sequence? Translation begins at the first start codon of the mRNA. DNA template strand: 5’ ...ACTGATGCCCATGGC... 3’ a)Met-Pro-Met b)Ala-Met-Gly-Ile-Ser c)Thr-Asp-Ala-His-Gly d)Met-Gly-Ile-Serarrow_forward
- Where is ribonuclease found?arrow_forwardWhat types of RNA are found in yeast cells?arrow_forwardThe following sequence represents a few codons present in one strand of DNA.Using this strand of DNA as a template strand for transcription, you are required to synthesize a new RNA strand. A) Show the codons that will be present on the RNA strand. B) Using the universal genetic code, provide the amino acids on the protein that will be translated from the RNA strand. 3’ TAC ATG GTT GTG CTA ATT 5’arrow_forward
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