Campbell Biology in Focus, Books a la Carte Edition; Modified Mastering Biology with Pearson eText - ValuePack Access Card - for Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780134433769
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman
Publisher: PEARSON
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Textbook Question
Chapter 15, Problem 10TYU
FOCUS ON INTERACTIONS
In a short essay (100‒150 words), discuss how the processes shown in Figure 15.2 are examples of feedback mechanisms regulating biological systems in bacterial cells.
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Shown below is a schematic diagram of the E. coli leader peptidase (Lep), which has several basic amino acids in a cytoplasmic loop. Propose a mutant of Lep that would be a test of the “inside positive” rule for the orientation of proteins in membranes.
Briefly describe the experiment carried out to demonstrate that proteins are capable of lateral movement in cell membranes.
Part A
Shown above is a schematic diagram of the E. coli leader peptidase (Lep) which has several basic amino acids in a cytoplasmic loop. Propose a mutant of Lep that
would be a test of the "inside positive" rule for the orientation of proteins in membranes.
Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting
your answer.
terminal
reversed
same
(+)
(-)
center
1. Make mutant Lep that substitutes noncharged residues for the
chains in the loop, and put
charged side chains in
2. If the inside-positive rule applies, the mutant ought to have the
membrane.
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charged side
positions.
orientation in the
Chapter 15 Solutions
Campbell Biology in Focus, Books a la Carte Edition; Modified Mastering Biology with Pearson eText - ValuePack Access Card - for Campbell Biology in Focus (2nd Edition)
Ch. 15.1 - How does binding of the trp corepressor to its...Ch. 15.1 - Describe the binding of RNA polymerase,...Ch. 15.1 - WHAT IF? A certain mutation in E. coli changes the...Ch. 15.2 - Prob. 1CCCh. 15.2 - Compare the roles of general and specific...Ch. 15.2 - Prob. 3CCCh. 15.3 - WHAT IF? Suppose the mRNA being degraded in Figure...Ch. 15.3 - MAKE CONNECTIONS Inactivation of one of the X...Ch. 15.4 - Describe the role of complementary base pairing...Ch. 15.4 - WHAT IF? Study the microarray in Figure 15.17. If...
Ch. 15 - If a particular operon encodes enzymes for making...Ch. 15 - The functioning of enhancers is an example of A. a...Ch. 15 - Which of the following is an example of...Ch. 15 - Prob. 4TYUCh. 15 - Prob. 5TYUCh. 15 - Which of the following would not be true of cDNA...Ch. 15 - Prob. 7TYUCh. 15 - SCIENTIFIC INQUIRY Imagine you want to study one...Ch. 15 - FOCUS ON EVOLUTION DNA sequences can act as tape...Ch. 15 - FOCUS ON INTERACTIONS In a short essay (100150...Ch. 15 - Prob. 11TYU
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