Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 14, Problem 4TY
Summary Introduction
Introduction: Bacterial DNA (Deoxyribose
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Students have asked these similar questions
The promoter consensus sequence at the -10 BOX in the bio gene in E. coli was TAGACT; however, a transversion occurred which changed the G nucleotide to T, what outcome(s) are likely?
a.
transcription levels would decrease because the promoter would be weaker
b.
nothing would happen because the promoter would not change the mRNA sequence
c.
the mutation would block RNA polymerase from binding to the DNA
d.
transcription levels would increase because the promoter would be stronger
e.
the bio gene does not require a functional promoter
Which of the following is not true regarding gene regulation that involves DNA bending?
a. The precise distance between the regulatory sequence and the promoter is important.
b. Effect can be to repress transcription
c. Effect can be to activation transcription
d. Regulated genes can be thousands of base pairs away from the regulatory sites
Define the following terms: a. chemotaxis b. lac operon c. 80S ribosome d. mRNA secondary structure e. mRNA scanning
Chapter 14 Solutions
Biology
Ch. 14.1 - Prob. 1CCCh. 14.2 - Which genes are under the control of the lac...Ch. 14.2 - With regard to regulatory proteins and small...Ch. 14.2 - What were the key observations made by Jacob,...Ch. 14.2 - CoreSKILL What was the eventual hypothesis...Ch. 14.2 - Prob. 3EQCh. 14.2 - Core Skill: Connections Look back at Fig 9.12....Ch. 14.2 - What are the advantages of having both an...Ch. 14.2 - Prob. 2CSCh. 14.3 - Prob. 1CC
Ch. 14.4 - What are the two opposing effects that histone...Ch. 14.4 - Prob. 1CSCh. 14.5 - Prob. 1CCCh. 14.5 - Prob. 2CCCh. 14 - Prob. 1TYCh. 14 - Prob. 2TYCh. 14 - Transcription factors that bind to DNA and...Ch. 14 - Prob. 4TYCh. 14 - For the lac operon, what would be the expected...Ch. 14 - Prob. 6TYCh. 14 - The trp operon is considered _____ blank operon...Ch. 14 - Prob. 8TYCh. 14 - Prob. 9TYCh. 14 - _____ blank refers to the process that allows a...Ch. 14 - Prob. 1CQCh. 14 - Transcriptional regulation often involves a...Ch. 14 - Prob. 3CQCh. 14 - Discuss the advantages and disadvantages of...Ch. 14 - Discuss the advantages and disadvantages of...
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- In the trp operon, tryptophan is best characterized as being a: A. repressor B. inducer C. corepressor D. DNA-binding domainarrow_forwardTheara operon is an inducible operon that controls the production of the sugar arabinose. When arabinose is present in a bacterium it binds to the protein AraC, and the complex binds to the initiator site to promote transcription. In this scenario, AraC is a(n) ________. a. activator b. inducer c. repressor d. operatorarrow_forwardShown below is diagram of RNA polymerase undergoing the process of transcription: This transcript: O Select one: a. None of these choices is correct. O b. has a sequence complementary to the top strand of the DNA. c. has a sequence identical to the top strand of the DNA. d. has a sequence complementary to the bottom strand of the DNA. e. has a sequence identical to the bottom strand of the DNA. f. It is not possible to determine, because not enough information has been provided. g. More than one of these choices is correct. MacEarrow_forward
- E. coli are grown on a medium containing lactose. Once glucose is added to the medium, the bacteria stop fermenting lactose. Which of the following BEST explains the observed effect? A. Cellular levels of cAMP are lowB.Glucose is bound to the promoter C. Repressor protein is bound to the operator D. Repressor protein is bound to the promoterarrow_forwardThe gad operon is controlled by a number of transcription factors that regulate a promoter of approximately 450bp. Which would NOT explain why bacterial promoters are shorter than the typical eukaryotic promoter? a. Bacteria do not have nucleosomes b. Bacteria do not have mediator complex c. Each operon is regulated by only one signal d. All of the above are truearrow_forwardExplain how the lac operon is regulated under the following conditions. Include the following terms in your answers: Repressor, Operator, RNA polymerase, CAP site, CAP protein, Promoter A. Lactose and glucose are both present. B. Lactose and glucose are both absent. C. Lactose is present and glucose is absent.arrow_forward
- Which of the following statements best describes the promoter of a protein-coding gene? A. The promoter is a protein that recruits RNA polymerase. B. The promoter is part of the RNA molecule itself. C. The promoter is a site found on RNA polymerase. D. The promoter contains the AUG start codon. E. The promoter is a nontranscribed region of a gene.arrow_forwardA mutation that inactivates the repressor gene of the lac operon results in (a) the continuous transcription of the structural genes (b) no transcription of the structural genes (c) the binding of the repressor to the operator (d) no production of RNA polymerase (e) no difference in the rate of transcriptionarrow_forwardTo start transcription, RNA polymerase binds to a please explain your answer a.initiator complex b.promoter sequence c.trigger factor d.Rho factor e.Shine-Dalgarno sequencearrow_forward
- Match Column A with Column B. transports amino acids to the site of protein synthesis has anticodon loop directs amino acid sequence of proteins contains the Shine-Delgarno sequence synthesized in the eukaryote nucleus found inside the ribosome region where the RNA binds to the DNA template…arrow_forwardDefine the following terms: a. promoter b. consensus sequence c. operon d. chromatin-remodeling complex e. general transcription factorsarrow_forwardOne strategy for producing a protein in the milk of a cow is toplace the coding sequence of the gene of interest next to a__________ and then inject the gene into a _________.a. lac operon promoter, cow oocyteb. β-lactoglobulin promoter, cow oocytec. lac operon promoter, cow mammary celld. β-lactoglobulin promoter, cow mammary cellarrow_forward
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