NESTER'S MICROBIOLOGY
9th Edition
ISBN: 9781264826940
Author: Anderson
Publisher: MCG
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Chapter 16, Problem 8MC
Summary Introduction
Introduction:
Endotoxin is a type of toxin produced by Gram-negative bacteria, which causes damage to the host. It is the lipopolysaccharide molecule that acts as a type of poison, which is present in the cell walls of the bacteria and it is released soon after the bacteria die. It causes infection and harms the health of a person.
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Which of these statements concerning cryptococcal meningoencephalitis is true?a) It is caused by a yeast with a large capsule.b) It is a disease of trees transmissible to humans.c) It typically attacks the meninges but spares the brain.d) Person-to-person transmission commonly occurs.e) It is seen only in persons who are immunocompromised.
Which of the following virulence factors among A-D is correctly matched with its definition or characterization?
A) O Invasins: pathogen proteins that prevent opsonization of the pathogen
B) O Phase variation: allows pathogen to switch between different forms of an extracellular antigen (e.g., flagellum)
C) O Protein A. a microbial factor that allows for attachment, typically a surface protein or surface glycoprotein
D) O Prevention of lysosome:phagosome fusion mechanism employed by an extracellular pathogen
E) OM protein, Opa protein: enzymes that interfere with the functioning of antibodies
Certain types of pathogens are unable to infect humans due to ________.
A) a reduction in human T cell populations
B) clonal selection
C) incompatible epitopes
D) species resistance
E) their lack of antigens
F) NONE of these terms accurately completes this sentence
Chapter 16 Solutions
NESTER'S MICROBIOLOGY
Ch. 16 -
1. Describe three types of symbiotic...Ch. 16 -
2. Describe two situations that can lead to...Ch. 16 -
3. How are acute, chronic, and latent infections...Ch. 16 - Prob. 4SACh. 16 - Describe the four general mechanisms by which...Ch. 16 - Describe two mechanisms that bacteria use to...Ch. 16 - Explain how a capsule can allow an organism to be...Ch. 16 - Prob. 8SACh. 16 -
9. Describe two mechanisms a virus might use to...Ch. 16 -
10. How do Schistosoma species avoid antibodies?
Ch. 16 - Prob. 1MCCh. 16 - Prob. 2MCCh. 16 - The C5a peptidase enzyme of Streptococcus pyogenes...Ch. 16 - Prob. 4MCCh. 16 - Prob. 5MCCh. 16 - Prob. 6MCCh. 16 - Prob. 7MCCh. 16 - Prob. 8MCCh. 16 - Prob. 9MCCh. 16 -
10. Which of the following statements about...Ch. 16 - A group of smokers suffering from Staphylococcus...Ch. 16 - Prob. 2ACh. 16 - Prob. 1CTCh. 16 - Prob. 2CT
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- Select all of the following that are functions performed by different antibodies. a) Group of answer choices b) Attracting natural killer cells to destroy an infected cell. c) Blocking the ability of a pathogen to bind to a host cell d) Lysing a pathogen cell wall or lipid bilayer. e) Marking a pathogen so that innate immune cells destroy the pathogen. f) Helping complement proteins bind to a pathogen.arrow_forwardWhy is transmission of cytomegalovirus (CMV) through blood components not a significant risk to most recipients? Question 10 options: a) Most recipients are CMV-positive. b) Most recipients are CMV-negative. c) The CMV cannot tolerate cold storage temperatures. d) None of the above.arrow_forwardSurface markers on pathogens are sometimes referred to as: A) PRRs B) TLRs C) PAMPs D) Fc receptors E) none of thesearrow_forward
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