Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 18, Problem 5TYK
Summary Introduction
Introduction: Insulin is an essential hormone produced by beta cells of pancreatic islets. The insulin controls the blood sugar level and energy production. The proinsulin is the prohormone precursor to insulin production.
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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.
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 cells
Eukaryotic 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.
Chapter 18 Solutions
Study Guide for Campbell Biology
Ch. 18 - In the following diagram of the lac operon, an...Ch. 18 - a. Repressible enzymes usually function in _____...Ch. 18 - a. Give an example of highly methylated and...Ch. 18 - Label the components of the following diagram that...Ch. 18 - a. How is the process of alternate RNA splicing...Ch. 18 - a. Describe how miRNAs regulate gene expression....Ch. 18 - a. What is the difference between determination...Ch. 18 - What type of evidence established that Bicoid...Ch. 18 - a. List three genetic changes that can convert a...Ch. 18 - Complete the following concept map to help you...
Ch. 18 - Fill in the following table to help you organize...Ch. 18 - Prob. 3SYKCh. 18 - Prob. 1TYKCh. 18 - Prob. 2TYKCh. 18 - Prob. 3TYKCh. 18 - Prob. 4TYKCh. 18 - Prob. 5TYKCh. 18 - DNA methylation of cytosine bases a. initiates the...Ch. 18 - Which of the following is not true of enhancers?...Ch. 18 - Prob. 8TYKCh. 18 - A eukaryotic gene typically has all of the...Ch. 18 - Prob. 10TYKCh. 18 - Prob. 11TYKCh. 18 - Which of the following statements explains why a...Ch. 18 - Prob. 13TYKCh. 18 - Prob. 14TYKCh. 18 - Prob. 15TYKCh. 18 - Prob. 16TYKCh. 18 - What would be the fate of a Drosophila larva that...Ch. 18 - Prob. 18TYKCh. 18 - Prob. 19TYKCh. 18 - Prob. 20TYKCh. 18 - Prob. 21TYKCh. 18 - Prob. 22TYKCh. 18 - Prob. 23TYKCh. 18 - Which of the following would most likely account...
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- Proteins that regulate gene expression by directly binding to the DNA are known as _____. a. transcription factors b. transposable elements c. translation factors d. phosphorylation e. methylationarrow_forwardA promoter is ______. a. a specific sequence of DNA nucleotides b. a specific sequence of RNA nucleotides c. a protein that binds to DNA d. an enzyme that synthesizes RNAarrow_forwardBinding of _______ to _______ in DNA can increase the rate of transcription of specific genes. a. activators; repressors c. repressors; operators b. activators; enhancers d. repressors; enhancersarrow_forward
- Can 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 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_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_forward
- Post-translational modifications of proteins can affect which of the following? a. protein function b. transcriptional regulation c. chromatin modification d. all of the abovearrow_forwardWhat is the difference between the core promoter and the regulatory promoter? a. Only the core promoter has consensus sequences. b. The regulatory promoter is farther upstream of the gene. c. General transcription factors bind to the core promoter; transcriptional activator proteins bind to the regulatory promoter. d. Both b and c.arrow_forwardYou are curious to identify the region of the gene X sequence that serves as an enhancer for gene expression. Design an experiment to investigate this issue.arrow_forward
- Gene expression regulation by methylation of the cytosines in a promoter would be considered : Select one: a. Translational regulation. b. Transcriptional regulation. c. Posttranscriptional regulation. d. Posttranslational regulation.arrow_forwardWhich of the following will increase the rate of transcription? a. Activation of a transcriptional repressor b. Inhibition of a transcriptional activator c. Histone methylation leading to chromatin compaction d. Removal of RNA polymerasearrow_forwarda) What is a gene promoter? b) What proteins bind to a promoter? c) What do those proteins do to control gene expression?arrow_forward
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