Microbiology Fundamentals: A Clinical Approach
3rd Edition
ISBN: 9781259709227
Author: Marjorie Kelly Cowan Professor, Heidi Smith
Publisher: McGraw-Hill Education
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Chapter 20, Problem 11Q
Why is it thought that the Shiga toxin in Shiga-toxin-producing E. coli originated in Shigella, and not the other way around? Also, explain how this characteristic was transferred between the two species.
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Consider the five E. coli merodiploid strains listed here.
Strain #1 I+P+O+Z-Y+/I+P+OcZ+Y+
Strain #2 I+P+O+Z+Y+/I-P+OcZ+Y-
Strain #3 I+P+O+Z-Y+/I-P+OcZ+Y-
Strain #4 I-P-O+Z+Y-/I+P+OcZ-Y+
Strain #5: ISP+O+Z+Y+/I-P+O+Z+Y-
Which of these strains will be inducible for expression of b-galactosidase? Select all correct answers.
A.) Strain #2
B.) Strain #3
C.) Strain #1
D.) Strain #4
E.) None of these
F. )Strain #5
Consider the five E. coli merodiploid strains listed here.
Strain #1 I+P+O+Z-Y+/I+P+OcZ+Y+
Strain #2 I+P+O+Z+Y+/I-P+OcZ+Y-
Strain #3 I+P+O+Z-Y+/I-P+OcZ+Y-
Strain #4 I-P-O+Z+Y-/I+P+OcZ-Y+
Strain #5: ISP+O+Z+Y+/I-P+O+Z+Y-
Which of these strains will express b-galactosidase constitutively? Select all correct answers.
A.)Strain #5
B.)Strain #1
C.)Strain #4
D.)Strain #2
E.)Strain #3
Paratuberculosis is a contagious, chronic and sometimes fatal infection that primarily affects the small intestine of ruminants. Mycobacterium avium subsp. paratuberculosis (MAP) is the causative agent of paratuberculosis. This kind of disease can exist undetected in herds for years. In order to detect the paratuberculosis among ruminants, thiol modified oligonucleotide having the sequence of 5’- GAT GAC ATC GCA GTC GAG CTG- 3’ was functionalized in the 15 nm gold nanoparticles. How many bonds (total bonds) will be formed upon hybridization with its complementary sequence? Answer Format: (Number only) *
Chapter 20 Solutions
Microbiology Fundamentals: A Clinical Approach
Ch. 20.1 - Prob. 1AYPCh. 20.1 - List the natural defenses present in the...Ch. 20.1 - Prob. 1NPCh. 20.2 - List the types of normal biota presently known to...Ch. 20.2 - Describe how our view has changed of normal biota...Ch. 20.3 - List the possible causative agents, modes of...Ch. 20.3 - Prob. 6AYPCh. 20.3 - Prob. 7AYPCh. 20.3 - Identify the most important features of mumps,...Ch. 20.3 - Differentiate among the main types of hepatitis,...
Ch. 20.3 - Prob. 1MMCh. 20.3 - Prob. 2NPCh. 20.3 - Prob. 3NPCh. 20.3 - Q. Why are the effects of jaundice so widespread...Ch. 20.3 - Prob. 4NPCh. 20.4 - Prob. 10AYPCh. 20.4 - Prob. 11AYPCh. 20.4 - Prob. 12AYPCh. 20.4 - Prob. 5NPCh. 20 - Prob. 1QCh. 20 - Healthy teeth are important for good nutrition and...Ch. 20 - Prob. 3QCh. 20 - Prob. 4QCh. 20 - Why is heating food contaminated with...Ch. 20 - Prob. 6QCh. 20 - Prob. 7QCh. 20 - Prob. 8QCh. 20 - Prob. 9QCh. 20 - Prob. 10QCh. 20 - Why is it thought that the Shiga toxin in...Ch. 20 - Prob. 12QCh. 20 - Prob. 13QCh. 20 - Prob. 14QCh. 20 - Prob. 15QCh. 20 - Prob. 16QCh. 20 - Describe the populations that are most at risk for...Ch. 20 - Prob. 18QCh. 20 - Prob. 19QCh. 20 - Prob. 20QCh. 20 - Prob. 21QCh. 20 - From chapter 11, figure 11.2a. Imagine for a...
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