Campbell Essential Biology with Physiology (5th Edition)
5th Edition
ISBN: 9780321967671
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece, Kelly A. Hogan
Publisher: PEARSON
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Textbook Question
Chapter 11, Problem 3SQ
The regulation of gene expression must be more complex in multicellular eukaryotes than in prokaryotes because
- a. eukaryotic cells are much larger.
- b. in a multicellular eukaryote, different cells are specialized for different functions.
- c. prokaryotes are restricted to stable environments.
- d. eukaryotes have fewer genes, so each gene must do several jobs.
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Students have asked these similar questions
All of the following regarding ribosomes are true EXCEPT:
A. Ribosomes are comprised of protein and RNA.
B. Ribosomes coordinate with initiation and elongation factors to regulate translation.
C. Ribosomes bind transcripts in their promoters.
D. Prokaryotic ribosomes are comprised of a large and a small subunit.
E. Ribosomes in eukaryotic cells bind to complete transcripts.
Which of the following best explains how the prokaryotic expression of a metabolic protein can be regulated when the protein is already present at a high concentration?
a.Repressor proteins can be activated and bind to regulatory sequences to block transcription.
b.Regulatory proteins can be inactivated to increase gene expression.
c.Transcription factors can bind to regulatory sequences to increase RNA polymerase binding.
d.Histone modification can prevent transcription of the gene.
In prokaryotes, control of gene expression usually occurs at the
a. splicing of pre-mRNA into mature mRNA.
b. initiation of translation.
c. initiation of transcription.
d. All of the choices are correct.
Chapter 11 Solutions
Campbell Essential Biology with Physiology (5th Edition)
Ch. 11 - Your bone cells, muscle cells, and skin cells look...Ch. 11 - A group of prokaryotic genes with related...Ch. 11 - The regulation of gene expression must be more...Ch. 11 - A eukaryotic gene was inserted into the DNA of a...Ch. 11 - How does dense packing of DNA in chromosomes...Ch. 11 - What evidence demonstrates that differentiated...Ch. 11 - The most common procedure for cloning an animal is...Ch. 11 - What is learned from a DNA microarray?Ch. 11 - Which of the following is a substantial difference...Ch. 11 - Prob. 10SQ
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Exposing Escherichia coli (e.coli) to ionizing radiation results in DNA damage. Say you perform an experiment and expose E. coli to increasing levels of ionizing radiation over time. After 180 minutes, all bacteria cells are found dead. 1. How do levels of LexA change over 180 minutes? Explain what is driving this change? 2. What changes in gene expression would occur over the course of the 180 minutes as a direct result of the changes in LexA levels? Detail how changing levels of LexA lead to such changes in gene expression.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_forwardA mechanism of control in E. coli not discussed in this chapter involves pausing of ribosomes allowing a transcription terminator to form in the mRNA. In eukaryotic fission yeast, this mechanism should a. be common since they are unicellular. b. not be common since they are unicellular. c. not occur as transcription occurs in the nucleus and translation in the cytoplasm. d. not occur due to possibility of alternative splicing.arrow_forward
- If a cell's DNA was mutated such that it lost the promoter of a gene, you would expect: a. That ribosomes wouldn’t bind to that gene b. No effect since the promoter doesn't have any coding information for the amino acids in the polypeptide c. Ribosomes would never stop translating that gene d. Transcription factors for that gene would no longer bind to activate expression of that gene e. tRNA would no longer bind to the codons of that genearrow_forwardWhich of the following gene regulation mechanisms are found ONLY in prokaryotes? a. coordinate regulation b. transcriptional regulation c. alternative splicing d. translational regulation e. DNA modificationsarrow_forwardCreate a Venn diagram to compare and contrast the process of gene expression in Bacteria versus eukaryotes. Remember that “gene expression” can include any part of transcription or translation. Try to be as thorough as you can about what aspects of this process are similar between the two taxa, and what characteristics are distinct to only Bacteria or eukaryotes. Plase include a minimum of 15 items in the Venn diagram.arrow_forward
- Which 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_forwardGive one example of a prokaryotic system of gene expression that is more complicated (duringtranscription at the promoter) than its corresponding eukaryotic system of gene expression.A. prokaryotes require general transcription factors to initiate transcriptionB. prokaryotes typically have activator and repressor DNA sequences thousands of nucleotides awayC. prokaryotes have three classes of RNA polymerasesD. prokaryotes always have their DNA tightly packed into higher-level structures than nucleosomesE. prokaryotes usually have polycistronic mRNAarrow_forwardChanges in a cell that affect micro RNAs lead to cancer because miRNAs... a. help a cell to maintain a tight control on protein levels in a cell. b. decrease the level of a specific protein. c. increase the level of a specific protein. d. prevent the Warburg effect.arrow_forward
- Researchers have identified a mutation in the LMNA gene, which encodes some of the pro- teins in the nuclear envelope to be associated with the development of muscular dystrophy and other auto-immune diseases. Which of the following best describes a likely direct effect of a mutation of the LMNA gene? A It directly alters the production of ATP within the affected cells. B с D It directly alters the intake of nutrients in the affected cells. It directly alters the folding of proteins into their functional shape. It directly alters the synthesis of proteins from nucleic acid sequences within the af- fected cells.arrow_forwardHDAC's are important enzymes involved in the regulation of Gene expression. This is because a. They create the Z form of DNA by removing acetyl groups from cytosines. b. they create euchromatic structure by adding acetyl groups to cytosine. c. they add methyl groups from histones creating less gene expression. d. they remove acetyl groups from histones creating less gene expression. e. they add methyl groups onto cytosines on DNA and create a heterochromatic structure.arrow_forwardA. Individual ribosomal proteins can be isolated that have catalytic activity B. The ribosome associates with only three nucleotides of mRNA at a time C. There is more RNA mass than protein mass in eukaryotic ribsomes D. Only the larger subunits of ribosomes contain ribosomal RNA E. rRNA has a catalytic role in translationarrow_forward
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