Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 18, Problem 3TYU
The functioning of enhancers is an example of
(A) a eukaryotic equivalent of prokaryotic promoter functioning.
(B) tränscriptional control of gene expression.
(C) the Stimulation of tianslation by initiation factors.
(D) post-translational control that activates certain proteins.
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Students have asked these similar questions
Which of the following is an example of post-transcriptionalcontrol of gene expression?(A) the addition of methyl groups to cytosine bases of DNA(B) the binding of transcription factors to a promoter(C) the removal of introns and alternative splicing of exons(D) gene amplification contributing to cancer
In eukaryotic cells, transcription cannot begin until(A) the two DNA strands have completely separated and exposed the promoter.(B) several transcription factors have bound to thepromoter
Regarding transcriptional promoter sites, which of the following statements are true? Select one or more than one:
a)They are located in the gene (DNA) whose information will be transcribed
b)They are found at the 3 'end of the gene that will be transcribed
c)Some of them are called 'TATA box'
d)They are found in the DNA, 'upstream' of the gene to be transcribed.
e)They are proteins of the cytoplasm
Chapter 18 Solutions
Campbell Biology
Ch. 18.1 - How does binding of the trp corepressor to the trp...Ch. 18.1 - Describe the binding of RNA Polymerase,...Ch. 18.1 - WHAT IF? A certain mutation in E. coli changes...Ch. 18.2 - In general, what are the effects of histone...Ch. 18.2 - MAKE CONNECTIONS Speculate about whether the same...Ch. 18.2 - Compare the roles of general and specific...Ch. 18.2 - Once mRNA encoding a particular protein reaches...Ch. 18.2 - WHAT IF? Suppose you compared the nucleotide...Ch. 18.3 - Compare miRNAs and siRNAs, including their...Ch. 18.3 - WH AT IF? Suppose the mRNA being degraded in...
Ch. 18.3 - Prob. 3CCCh. 18.4 - MAKE CONNECTIONS As you learned in Chapter 12,...Ch. 18.4 - MAKE CONNECTIONS Explain how the signaling...Ch. 18.4 - How do fruit fly maternal effect genes determine...Ch. 18.4 - Prob. 4CCCh. 18.5 - Prob. 1CCCh. 18.5 - Under what circumstances is cancer considered to...Ch. 18.5 - MAKE CONNECTIONS The p53 protein can activate...Ch. 18 - Compare and contrast the roles of a corepressor...Ch. 18 - Describe what must happen in a cell for a gene...Ch. 18 - Why are miRNAs called noncoding RNAs? Explsin how...Ch. 18 - Describe the two main processes that cause...Ch. 18 - Compare the usual functions of proteins encoded by...Ch. 18 - If a particular operon encodes enzymes for making...Ch. 18 - Muscle cells differ from nerve cells mainly...Ch. 18 - The functioning of enhancers is an example of (A)...Ch. 18 - Cell differentiation always involves (A)...Ch. 18 - Which of the following is an example of...Ch. 18 - What would occur if the repressor of an inducible...Ch. 18 - Absence of bicoid in mRNA from a Drosophila egg...Ch. 18 - Which of the following statements about the DNA in...Ch. 18 - Within a cell, the amount of protein made using a...Ch. 18 - Prob. 10TYUCh. 18 - draw it The diagram below shows five genes,...Ch. 18 - Prob. 12TYUCh. 18 - SCIENCE. TECHNOLOGY, AND SOCIETY Trace amounts of...Ch. 18 - WRITE ABOUT A THEME: INTERACTIONS In a Short essay...Ch. 18 - SYNTHESIZE YOUR KNOWLEDGE The flashlight fish has...
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- Regulation can occur at many steps in the pathway of gene expression. Briefly describe at least one example of a regulator at the level of: a) transcriptional initiation b) protein stability c) posttranslational protein modificationarrow_forwardThe transcription factors that bind to enhancer sequences are known as _____. A) regulators B) activators C) common control elementsarrow_forwardExpression of a gene, in terms of greater production of the protein it encodes, could be increased by ... Question 12 options: A) increasing transcription of that gene. B) inhibiting proteases that break down the protein it encodes C) increasing the half life of its mRNA transcript D) A and C E) A, B and Carrow_forward
- Which of the following is not a possible outcome of changing the epigenetic code? a) exposure of regulatory region b) binding of transcription factors c) altered gene expression d) repositioning of nucleosomes by polymerasesarrow_forwardThrough alternative splicing, eukaryotes (a) reinforce gene inactivation (b) prevent transcription of heterochromatin (c) produce related but different proteins in different tissues (d) amplify genes to meet the requirement of high levels of a gene product (e) bind transcription factors to enhancers toactivate transcriptionarrow_forwardLabel these processes 1-8 (1 being the earliest time point) in the order they would occur during expression of a eukaryotic gene. a) Regulatory transcription factor binding at an enhancer b) transcription initiation c) Phosphorylation of the gene's protein product d) MRNA nuclear export e) general transcription factor binding to promoter f) chromatin remodeling to expose promoter g) splicing h) translation initiationarrow_forward
- Explain Molecular Mechanisms of Transcription Repression and Activation.arrow_forwardWe know that eukaryote gene regulation can occur at any point in the process of gene expression. (a) What is the final step where gene expression control may occur in the process of protein expression ? (b) Is this a cellular energy efficient or inefficient mechanism of gene regulation? Explain.arrow_forwardWhich statement is TRUE of the CRM (cis-regulatory module)? a) it codes for transcription factors (TFs) b) It is frequently located far from the gene it regulates c) It contains the DNA binding sequence recognized by RNA polymerase d) It includes the coding sequence CDS of the genearrow_forward
- The RB (retinoblastoma) protein normally [ Select] ["keep a transcription factor in an inactive state", "keep a transcription factor in an active state", "keep the CDK in a phosphorylated state", "block the function of the APC"] ...But it can be deactivated by [ Select ] ["ubiquitination", "methylation", "phosphorylation", "the use of a GAP"] .Mutations in Rb can lead to cancer because these mutations [ Select ] ["result in constitutive transcription leading to promotion of the cell cycle", "keep CDKs off", "deactivate p53", "increase the production of growth hormones"] PLEASE SELCET THE CORRECT ONE FOR SECTION ONE . EACH SENTECNE HAVE 4 SECTION TO PICK FROM.arrow_forwardEnhancers contain binding sites for transcription factors that regulate transcription. are activators that act across insulator barriers. contain binding sites for the basal transcription apparatus. are necessary for transcription, but are not involved in regulating transcription.arrow_forwardATM is a kinase that phosphorylates histone H2AX in response to double-stranded DNA breaks. Which of the following scenarios would most quickly regulate ATM activity in the cell? a) Adding silencing methyl groups to cytosines in the Atm gene b) Modifying the histone code for the Atm gene c) Increasing expression of a miRNA specific for the Atm mRNA d) Activating an E3 ubiquitin ligase specific for the ATM proteinarrow_forward
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