Campbell Biology: Concepts & Connections (8th Edition)
8th Edition
ISBN: 9780321885326
Author: Jane B. Reece, Martha R. Taylor, Eric J. Simon, Jean L. Dickey, Kelly A. Hogan
Publisher: PEARSON
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Textbook Question
Chapter 11, Problem 3TYK
A homeotic gene does which of the following?
a. It serves as the ultimate control for prokaryotic operons.
b. It regulates the expression of groups of other genes during development.
c. It represses the histone proteins in eukaryotic chromosomes.
d. It helps splice mRNA after transcription.
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Students have asked these similar questions
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' UTR
Which 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.
In the trp operon, what happens to the trp repressor in the absence of tryptophan?
a. It binds to the operator and represses transcription.
b. It cannot bind to the operator, and transcription takes place.
c. It binds to the regulator gene and represses transcription.
d. It cannot bind to the regulator gene, and transcription takes place.
Chapter 11 Solutions
Campbell Biology: Concepts & Connections (8th Edition)
Ch. 11 - Complete the following concept map to test your...Ch. 11 - Level 1: Knowledge/Comprehension 2. Which of the...Ch. 11 - A homeotic gene does which of the following? a. It...Ch. 11 - Which of the following is a valid difference...Ch. 11 - The control of gene expression is more complex in...Ch. 11 - Your bone cells, muscle cells, and skin cells look...Ch. 11 - Prob. 7TYKCh. 11 - You obtain an egg cell from the ovary of a white...Ch. 11 - Mutations can alter the function of the lac operon...Ch. 11 - A mutation in a single gene may cause a major...
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- Which of the following is not an example of constitutively expressed gene? a. genes for cell division and growth b. genes involved in DNA repair c. genes for cellular respiration d. genes that function in ATP synthesisarrow_forwardCan one transcription factor sometimes act as a repressor and sometimes act as an activator? a. Yes, but it depends on where the transcription factor binds in the promoter b. Yes, but it depends on other proteins that might act with the transcription factor c. No, transcription factors are always either activators or repressors d. Yes, but only if a mutation happensarrow_forwardWhich of the following statements about gene regulation is false? a. An operon contains DNA sequences that regulates its own expression. b. The operator region can only be bound by an activator protein. c. Transcription factors can affect the binding of RNA polymerase to the promoter. d. A repressor is a transcription factor that hinders gene transcription.arrow_forward
- Which of the following does not accurately describe eukaryotic transcriptional factors? a. Changes in transcriptional factor express can lead to changes in development. b. Most can regulate multiple different genes. c. They are each specific to one gene. d. Expression of different transcription factors leads to differentiation of cells.arrow_forwardEukaryotic cells have multiple complex mechanisms for the regulation of gene expression, but a regulatory mechanism they rarely (if ever) use is a. operons. b. regulatory proteins. c. transcriptional factors. d. promoters.arrow_forwardYou observe that a particular gene is being transcribed during development. How can you tell whether the expression of this gene is under transcriptional or translational control?arrow_forward
- What is the difference between a structural gene and a regulator gene? a. Structural genes are transcribed into mRNA, but regulator genes aren’t. b. Structural genes have complex structures; regulator genes have simple structures. c. Structural genes encode proteins that function in the structure of the cell; regulator genes carry out metabolic reactions. d. Structural genes encode proteins; regulator genes control the transcription of structural genes.arrow_forwardIs each of the following statements true or false? A. An enhancer is a type of regulatory element. B. A core promoter is a type of regulatory element. C. Regulatory transcription factors bind to regulatory elements. D. An enhancer may cause the down regulation of transcription.arrow_forwardWhat is an operon ? a. A series of genes controlled by the same operator b. A series of genes on the same mRNA molecule c. A series of genes that all have the same function d. A series of genes all regulated by the same repressorarrow_forward
- What strategy does a genetically encoded calcium indicator look like to allow fluorescence imaging of only one cell type in an acute slice of the brain? A.The use of fluorescent protein expression inhibitors in other cells B.The injection of a recombinant virus causing the death of other cells C.The use of a promoter specific to these cells D.Activation of membrane receptors specific to these cellsarrow_forwardWhich of the following is the best description of a transcription factor? A. A protein that brings the correct nucleotides to RNA polymerase B. A protein that binds to specific DNA sequences C. A DNA sequence that binds to RNA polymerase D. A modification that is made to mRNA to help it be exported from the nucleus. .arrow_forwardWhich of the following mechanisms is an example of post-transcriptional gene regulation? A. binding of a repressor protein to an operon B. alternative splicing of exons in an RNA transcript C. acetylation of histones in chromatin D. methylation of specific regions of DNAarrow_forward
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