Prescott's Microbiology
10th Edition
ISBN: 9781259281594
Author: Joanne Willey, Linda Sherwood Adjunt Professor Lecturer, Christopher J. Woolverton Professor
Publisher: McGraw-Hill Education
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Chapter 27.2, Problem 2.2RIA
Why do cold sores recur throughout the lifetime of an HSV-1–infected individual?
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Ch.23
How is Salmonella able to cross from the intestines into the blood?
A. it is so small that it can squeeze between intestinal cells
B. it secretes a toxin that induces its uptake into intestinal epithelial cells
C. it secretes enzymes that create perforations in the intestine
D. it can get into the blood only if the bacteria are deposited directly there, that is, through a puncture
—
Which virus is associated with liver cancer?
A. hepatitis A
B. hepatitis B
C. hepatitis C
D. both hepatitis B and C
—
explain your answer thoroughly
Ch.21
What causes patients infected with the yellow fever virus to turn yellow (jaundice)?
A. low blood pressure and anemia
B. excess leukocytes
C. alteration of skin pigments
D. liver damage in final stage of disease
—
What is the advantage for malarial parasites to grow and replicate in red blood cells?
A. able to spread quickly
B. able to avoid immune detection
C. low oxygen environment for growth
D. cooler area of the body for growth
—
Which microbe does not live part of its lifecycle outside humans?
A. Toxoplasma gondii
B. Cytomegalovirus
C. Francisella tularensis
D. Plasmodium falciparum
—
explain your answer thoroughly
Ch.22
Streptococcus pneumoniae has a capsule to protect it from killing by alveolar macrophages, which kill bacteria by…
A. cytokines
B. antibodies
C. complement
D. phagocytosis
—
What fact about the influenza virus allows the dramatic antigenic shift that generates novel strains?
A. very large size
B. enveloped
C. segmented genome
D. over 100 genes
—
explain your answer thoroughly
Chapter 27 Solutions
Prescott's Microbiology
Ch. 27.1 - List some characteristics used in classifying...Ch. 27.1 - Consider these terms: Equine torovirus,...Ch. 27.2 - What enzyme found in the T4 baseplate facilitates...Ch. 27.2 - Why do you think T4 evolved to initiate DNA...Ch. 27.2 - What function does HMC glycosylation serve?Ch. 27.2 - How is the envelope of this virus formed? How does...Ch. 27.2 - Explain why the T4 genome is circularly permuted.Ch. 27.2 - Prob. 1.2RIACh. 27.2 - How is a prophage induced to become active again?Ch. 27.2 - Describe the roles of cII, CIII, repressor (CI),...
Ch. 27.2 - How do the temperate phages Mu and P1 differ from...Ch. 27.2 - The CRISPR/Cas system has been a boon to...Ch. 27.2 - Why do cold sores recur throughout the lifetime of...Ch. 27.2 - In what part of the host cell does a herpesvirus...Ch. 27.2 - Many small DNA viruses rely on host enzymes for...Ch. 27.3 - Why is the X174 genome considered plus stranded?Ch. 27.3 - Prob. 2MICh. 27.3 - Why is it necessary for some ssDNA viruses to...Ch. 27.3 - From the point of view of the virus, compare the...Ch. 27.3 - How do parvoviruses trick the host DNA polymerase...Ch. 27.4 - The rotavirus genome encodes 12 proteins. Suggest...Ch. 27.4 - Describe the life cycle of 6 phage. What makes...Ch. 27.4 - Prob. 3RIACh. 27.4 - In what ways are the life cycles of 6 and...Ch. 27.5 - Where in the host does the plus-strand RNA genome...Ch. 27.5 - How do some plus-strand viruses use polyproteins...Ch. 27.5 - What is an IRES? Why is it important?Ch. 27.5 - Prob. 3RIACh. 27.6 - How does that use of a segmented genome by...Ch. 27.6 - Prob. 2RIACh. 27.7 - Prob. 1MICh. 27.7 - Prob. 1RIACh. 27.7 - Prob. 2RIACh. 27.7 - What role does alternative splicing play in the...Ch. 27.8 - Prob. 1RIACh. 27.8 - Trace the HBV multiplication cycle, paying...Ch. 27 - No temperate RNA phages have yet been discovered....Ch. 27 - The choice between lysogeny and lysis is...Ch. 27 - Prob. 3CHICh. 27 - You are studying RNA viruses and have discovered a...Ch. 27 - Prob. 5CHICh. 27 - Upon infection of host epithelial cells,...Ch. 27 - Associated with the envelope of herpesviruses are...
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