Campbell Biology Plus Masteringbiology
10th Edition
ISBN: 9780321775849
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
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 the diagram of transcription shown here, fill in the blanks with the appropriate terms: (a) gene; (b) promoter; (c) terminator; (d) RNA polymerase; (e) mRNA.
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 modification
Chapter 18 Solutions
Campbell Biology Plus Masteringbiology
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 - Compare the roles of general and specific...Ch. 18.2 - WHAT IF? Suppose you compared the nucleotide...Ch. 18.2 - Once mRNA encoding a particular protein reaches...Ch. 18.3 - Compare miRNAs and siRNAs, including their...Ch. 18.3 - WH AT IF? Suppose the mRNA being degraded in...Ch. 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 - MAKE CONNECTIONS The p53 protein can activate...Ch. 18.5 - Under what circumstances is cancer considered to...Ch. 18.5 - Prob. 3CCCh. 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 - Prob. 11TYUCh. 18 - Prob. 12TYUCh. 18 - Prob. 13TYUCh. 18 - Prob. 14TYUCh. 18 - WRITE ABOUT A THEME: INTERACTIONS In a Short essay...Ch. 18 - SYNTHESIZE YOUR KNOWLEDGE The flashlight fish has...
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- Through 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_forwardExplain Molecular Mechanisms of Transcription Repression and Activation.arrow_forward11,12,13arrow_forward
- Using the transcription unit diagrammed below, in which exons are represented by blue boxes and introns are represented by the connecting lines. You discover a single base deletion in region E of this DNA sequence. Regarding transcription, this mutation will likely: 1.) Result in an alteration to the mRNA sequence. 2.)Have no effect on transcription or the mRNA sequence 3.)Prevent transcription at the TATAA box 4.) Result in an increase or decrease in the amount of mRNA transcribedarrow_forwardThe 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_forward
- Regarding eukaryotic genes, it is correct to state that: * A) Distal enhancer-like elements decrease the intensity of gene transcription activation B)Mutations in intronic regions of a gene can alter the levels of its corresponding protein C)They are regulated only by promoter regions, being activated or repressed by the presence of transcription factors D)The junctions of exons and introns are recognized by splicing factors, which ensure the production of the same mRNA regardless of cell type. E) Activator and repressor proteins bind to the coding region of genes, regulating the intensity of their transcriptionarrow_forwardMatch the type of chromatin modification with the most likely effect on gene expression near the modified region. Each answer will be used once. -Increased expression -decreased expression -may increase or decrease expression a)Histone acetylation b)Histone methylation c)CpG methylationarrow_forwardWhat epigenetic modification(s) would you expect to see near a gene promoter where transcription is occurring? Histone acetylation 2.)Histone methylation 3.)DNA methylation 4.) a&c 5.) b&carrow_forward
- 24arrow_forwardWhich of the following statements is most consistent with the pattern of gene expression shown in the given graph? (A) Repressors that bind to a regulatory sequence of Gene X are present in brain tissue but not in heart tissue. (B) Gene X is located within heterochromatin in brain tissue and within euchromatin in heart tissue. (C) Small RNAs that help degrade Gene X mRNA are present in brain tissue but not in heart tissue (D)Activators that bind to an enhancer of Gene X are present in brain tissue but not in heart tissue.arrow_forwardonce transcription is complete gene expression is controlled by..........?!arrow_forward
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