EBK BIOLOGY
11th Edition
ISBN: 8220106820636
Author: Martin
Publisher: CENGAGE L
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Textbook Question
Chapter 14, Problem 10TYU
Which of the following is an example of positive control? (a) transcription occurs when a repressor binds to an inducer (b) transcription cannot occur when a repressor binds to a corepressor (c) transcription is stimulated when an activator protein binds to DNA (d) a and b (e) a and c
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1. (a)
Binding of inducer protein to repressor protein
Gene is switched ON
Gene is switched OFF
Does NOT affect the gene expression
(b)
Repressor protein binding at DNA upstream
Gene is switched ON
Gene is switched OFF
Does NOT affect the gene expression
(c)
Operator is not bound with the repressor
Gene is switched ON
Gene is switched OFF
Does NOT affect the gene expression
Expression 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 C
Which 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 gene
Chapter 14 Solutions
EBK BIOLOGY
Ch. 14.1 - Explain why bacterial and eukaryotic cells have...Ch. 14.1 - Prob. 1CCh. 14.1 - Prob. 2CCh. 14.2 - Prob. 2LOCh. 14.2 - Distinguish among inducible, repressible, and...Ch. 14.2 - Differentiate between positive and negative...Ch. 14.2 - Prob. 5LOCh. 14.2 - Prob. 1CCh. 14.2 - What structural features does the trp operon share...Ch. 14.2 - Prob. 3C
Ch. 14.2 - Prob. 4CCh. 14.3 - Prob. 6LOCh. 14.3 - Give examples of some of the ways eukaryotic...Ch. 14.3 - Prob. 8LOCh. 14.3 - Prob. 9LOCh. 14.3 - Prob. 10LOCh. 14.3 - Prob. 1CCh. 14.3 - Prob. 2CCh. 14.3 - Prob. 3CCh. 14.3 - Prob. 4CCh. 14.3 - Prob. 5CCh. 14 - The regulation of most bacterial genes occurs at...Ch. 14 - Prob. 2TYUCh. 14 - Prob. 3TYUCh. 14 - Prob. 4TYUCh. 14 - Inactive genes tend to be found in (a) highly...Ch. 14 - Prob. 6TYUCh. 14 - Which of the following is characteristic of genes...Ch. 14 - Through alternative splicing, eukaryotes (a)...Ch. 14 - A mutation that inactivates the repressor gene of...Ch. 14 - Which of the following is an example of positive...Ch. 14 - Prob. 11TYUCh. 14 - PREDICT Compare the types of bacterial genes...Ch. 14 - INTERPRET DATA Develop a simple hypothesis that...Ch. 14 - Prob. 14TYUCh. 14 - Prob. 15TYUCh. 14 - EVOLUTION LINK Suggest why evolution resulted in...Ch. 14 - Prob. 17TYU
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- The transcription factors that bind to enhancer sequences are known as _____. A) regulators B) activators C) common control elementsarrow_forwardWhen taken up by a cell, which of the following molecules binds to a repressor so that the repressor no longer binds to the operator? a) inducer b) promoter c) repressor d) corepressorarrow_forwardRegarding 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 cytoplasmarrow_forward
- A mutation occurs in a gene, resulting in it being expressed at the wrong time during development. Where is the mutation most likely to be found? a) In the transcription start site (TSS) b) In a TF binding site in the cis-regulatory region c) In the coding sequence d) In the 5' UTRarrow_forwardWhich of the following is true of transcription factors? A)The same transcription factors are found in all cell types. B)They can increase or decrease gene expression. C)They are a type of cis-acting element. D)They bind only to promoters.arrow_forwardDescribe and give an example of each of the following levels of gene expression control in eukaryotes: a) epigenetic control b) transcriptional control c) post-transcriptional control d) translational control e) post-translational controlarrow_forward
- A transcriptional activator protein regulates gene expression in a) cisb) transarrow_forwardWhich 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 cancerarrow_forwardWhich of the following is true about the HesC gene? Choose all possible answers a) repressed by the Pmar1 gene b) represses transcription factors activating skeleton forming genes c) represses Pmar1 gene d) repressed by transcription factors activating skeleton forming genes e) inhibits Wnt pathwayarrow_forward
- What is a possible outcome of the addition of a transcription factor such as Myod to the nucleus of a cell? Assume that there are no other factors to either activate or prevent the response of the cell. Group of answer choices A) Production of mRNA from genes that were previously not expresed B)adding methyl groups to DNA C)prevention of protein synthesis D)uncoiling of the chromatin to allow transcriptionarrow_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_forwardGeneral transcription factors Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a a) act at every gene for a given RNA pol b b) act only at specific genes for under specific conditions c) must be very close to the promoter C d) none of the abovearrow_forward
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