Microbiology: An Introduction
11th Edition
ISBN: 9780321733603
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: Benjamin Cummings
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Chapter 13, Problem 1CAE
Summary Introduction
Introduction:
HIV virus causes severe immune deficiency in host which leads to other opportunistic infections.
Case summary:
A 40 year old man acquires positive HIV associated with the symptoms, such as abdominal pain, fatigue and low grade fever for 2 weeks. His chest X-ray reveals lung infiltrate and staining shows negative for Gram and acid fast stain. The viral culture of his sputum sample reveals that the causative organisms are large, enveloped polyhedral virus with double stranded DNA.
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A student completed a plate and liquid lysate followed by a plaque assay. The volume harvested for the plate lysate was 5.5mL and had a titre of 1.8x10^10 PFU/mL. The volume harvested for the liquid lysate was 9.5mL and had a titre of 1.1x10^10 PFU/mL. Which of these lysates had the highest viral yield?
Liquid lysate had the highest yield
Plate lysate had the highest yield
They both have the same yield
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Chapter 13 Solutions
Microbiology: An Introduction
Ch. 13 - Why do we classify viruses as obligatory...Ch. 13 - List the four properties that define a virus, what...Ch. 13 - Describe the four morphological classes of...Ch. 13 - DRAW IT Label the principal events of attachment,...Ch. 13 - Compare biosynthesis of a + stranded RNA and a ...Ch. 13 - Prob. 6RCh. 13 - Why is it difficult to determine the etiology of a...Ch. 13 - Prob. 8RCh. 13 - Plant viruses can be cultured in (c) __________.Ch. 13 - NAME IT Identify the viral family that infects...
Ch. 13 - Discuss the arguments for and against the...Ch. 13 - In some viruses, capsomeres function as enzymes as...Ch. 13 - Why was the discovery of simian AIDS and feline...Ch. 13 - Prophages and proviruses have been described as...Ch. 13 - Prob. 1MCQCh. 13 - The molecule serving as mRNA can be incorporated...Ch. 13 - Prob. 3MCQCh. 13 - Prob. 4MCQCh. 13 - An example of lysogeny in animals could be a. slow...Ch. 13 - The ability of a virus to infect an organism is...Ch. 13 - Which of the following statements is false? a....Ch. 13 - Prob. 8MCQCh. 13 - Prob. 9MCQCh. 13 - Prob. 10MCQCh. 13 - Prob. 1CAECh. 13 - A newborn female developed extensive vesicular and...Ch. 13 - Prob. 3CAE
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