Microbiology: A Systems Approach
4th Edition
ISBN: 9780073402437
Author: Marjorie Kelly Cowan Professor
Publisher: McGraw-Hill Education
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Question
Chapter 19, Problem 5MCQ
Summary Introduction
Introduction:
Chronic form of meningitis is caused by Cryptococcus neoformans. The symptoms arise gradually. The most common symptom is headache; however, neck stiffness and nausea are other symptoms.
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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 19 Solutions
Microbiology: A Systems Approach
Ch. 19.1 - Describe the important anatomical features of the...Ch. 19.1 - Prob. 2AYPCh. 19.2 - Discuss the current state of knowledge regarding...Ch. 19.3 - Prob. 2CFCh. 19.3 - Prob. 4AYPCh. 19.3 - Prob. 5AYPCh. 19.3 - Discuss important features of meningoencephalitis,...Ch. 19.3 - Prob. 7AYPCh. 19.3 - Prob. 8AYPCh. 19.3 - Prob. 9AYP
Ch. 19.3 - Prob. 10AYPCh. 19 - Prob. 1CFCh. 19 - Prob. 1MCQCh. 19 - Prob. 2MCQCh. 19 - Meningococcal meningitis is caused by a....Ch. 19 - Prob. 4MCQCh. 19 - Prob. 5MCQCh. 19 - Prob. 6MCQCh. 19 - Prob. 7MCQCh. 19 - Prob. 8MCQCh. 19 - Prob. 9MCQCh. 19 - Prob. 10MCQCh. 19 - Prob. 11TFCh. 19 - Prob. 12TFCh. 19 - Prob. 13TFCh. 19 - Prob. 14TFCh. 19 - Prob. 15TFCh. 19 - Prob. 1CTQCh. 19 - Prob. 2CTQCh. 19 - Prob. 3CTQCh. 19 - Prob. 4CTQCh. 19 - Prob. 5CTQCh. 19 - Prob. 6CTQCh. 19 - Prob. 7CTQCh. 19 - Prob. 8CTQCh. 19 - Prob. 9CTQCh. 19 - Prob. 10CTQCh. 19 - Prob. 1CCCh. 19 - Prob. 2CCCh. 19 - Prob. 3CCCh. 19 - Prob. 1VCCh. 19 - Prob. 2VCCh. 19 - Prob. 1CM
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