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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Chapter 11, Problem 5TYK
The control of gene expression is more complex in multicellular eukaryotes than in prokaryotes because _____. (Explain your answer.)
a. eukaryotic cells are much smaller
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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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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- In Eukaryotes, DNA is a long molecule inside a tiny nucleus. a. How can this long chain fit in such space? b. How does it affect gene expression?arrow_forwardChoose ONE example of control of gene expression in eukaryotes and describe it in detail. Identify which of the five levels of regulation of gene expression your example represents and explain how your example benefits the cell in which it takes place.arrow_forwardA scientist studies the production of a key digestive enzyme in silk moths. The moths have one gene for this enzyme, and the scientist extracts mRNA transcribed from this gene as well as protein translated from it. The gene has three introns in its sequence. If the researcher compares mRNA from inside the nucleus to mRNA from the ribosomes, what will be found? A. less mRNA in the nucleus B. shorter mRNA in the ribosomes C. identical mRNAs in both places D. mRNA covalently attached to protein in the nucleusarrow_forward
- Name one step of gene expression and describe one way that step differs between prokaryotes and eukaryotes.arrow_forwardMuscle cells differ from nerve cells mainly because they(A) express different genes.(B) contain different genes.(C) use different genetic codes.(D) have unique ribosomes.arrow_forwardExposing 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_forward
- compare and contrast the negative and positive regulation of prokaryotic gene expressionarrow_forwardWhy is regulating transcription the main way that cells control gene expression? A. Because transcription is the last step in gene expression, stopping here ensures that the cell has a stockpile of proteins to prepare them from all unexpected environmental changes. B. Because transcription involves interactions with DNA, preventing transcription reduces the changes of mutation in the cell’s genome. C. Because transcription is the first step in gene expression, stopping at transcription reduces the amount of energy and resources used by producing unnecessary gene products. D. Because transcription is the shortest step in gene expression, preventing transcription has little effect on the rate of protein production.arrow_forwardA biology professor at a prestigious university stated to his introductory class that "Today, a basic understanding of DNA and genetics is as important as a basic understanding of computers and the internet."Based upon what you have learned about DNA and gene expression in this module, how could you make a case to support this statement?arrow_forward
- 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_forwardIn a fly egg, the nurse cells are killed before they can produce bicoid mRNA. What will happen? Group of answer choices A. The larva will develop normally B. The resulting larva will have no head and two tail ends C. The resulting larva will have two heads D. The resulting fly will have legs growing out of its headarrow_forwardWhat determines which transcription factors will be able to regulate a particular gene's expression? A. The collection of control element sequences that are associated with that gene B. The location of that gene sequence (which chromosome it is located on) C. The sequence of introns present in that gene D. The sequence of exons present in that gene ..arrow_forward
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