Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 55.1, Problem 2SB
Summary Introduction
To review:
The consequences of overexploitation of fish population.
Introduction:
The human activities that pose threats to biodiversity include the clearing of the forests, overexploitation of marine animals, and hydrologic alteration of the freshwater ecosystem. Habitat destruction is a major cause of biodiversity and species extinction.
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a) The lux operon is under positive control. Based on this information, does the luxR regulator sequence make a repressor protein or an activator protein?
b) How will binding of this complex affect RNA polymerase? Remember this operon is under positive control.
c) AHL is a signal molecule that V. fisheri makes to communicate with neighboring bacterial cells. This molecule can diffuse outside of the cell and into another bacterial cell in close proximity. This type of communication between bacterial cells is known as quorum sensing. If bacterial cell density is low how will this affect the lux operon? What will happen if the density is high?
1) Given an mRNA with the following sequence, please translate the codons to a chain of amino acids. Use the codon chart below.5’AUG/CCU/GCU/UAC/CGG/GAG/UAA3’
“met-_________-_________-_________-_________-_________”STOP”
2) Assuming the original polypeptide chain below, match each type of point mutation with the polypeptide chain that results.
Original polypeptide: Pro-Thr-Ser-Leu-Leu-His-Asn
A. Missense
B. Silent
C. Nonsense
D. Frameshift
______ Pro-Thr-Ser-STOP
______ Pro-Thr-Ser-Leu-Ile-His-Asn
______ Pro-Thr-Ser-Leu-Leu-His-Asn
_______ Pro-Thr-His-Cys-Tyr-Thr
Chapter 55 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 55.1 - Prob. 1SBCh. 55.1 - Prob. 2SBCh. 55.1 - Prob. 3SBCh. 55.2 - Prob. 1SBCh. 55.2 - Prob. 2SBCh. 55.3 - How does biodiversity serve as a storehouse of...Ch. 55.3 - Prob. 2SBCh. 55.4 - Prob. 1SBCh. 55.4 - Prob. 2SBCh. 55.4 - Why are conservation biologists especially...
Ch. 55.5 - Prob. 1SBCh. 55.5 - Prob. 2SBCh. 55.5 - Prob. 3SBCh. 55.6 - Prob. 1SBCh. 55.6 - Prob. 2SBCh. 55.6 - Prob. 3SBCh. 55 - Prob. 1TYKCh. 55 - Prob. 2TYKCh. 55 - Prob. 3TYKCh. 55 - Prob. 4TYKCh. 55 - Prob. 5TYKCh. 55 - Prob. 6TYKCh. 55 - Prob. 7TYKCh. 55 - Prob. 8TYKCh. 55 - Prob. 9TYKCh. 55 - Prob. 10TYKCh. 55 - Prob. 11TYKCh. 55 - Prob. 12TYKCh. 55 - Prob. 13TYKCh. 55 - Devise a field study to determine whether the...Ch. 55 - Prob. 15TYKCh. 55 - Prob. 1ITD
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