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Case study book The Official CompTIA Security+ Self-Paced Study Guide (Exam SY0-601) of CompTIA - ISBN: 9781642743326 (15-Test-B)
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Test Bank For CompTIA Security+ Guide to Network Security Fundamentals 8th Edition
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Microbiology: An Introduction, 12e (Tortora)Chapter 15 Microbial Mechanisms of Pathogenicity
15.1 Multiple-Choice Questions
1) The most frequently used portal of entry for pathogens is the
A) mucous membranes of the respiratory tract.
B) mucous membranes of the gastrointestinal tract.
C) skin.
D) parenteral route.
E) All of these portals are used equally.
Answer: A
Section: 15.1
Bloom's Taxonomy: Knowledge
ASMcue Outcome: 5.4
Learning Outcome: 15.1
2) The ability of some microbes, such as Trypanosoma or Giardia to alter their surface
molecules and evade destruction by the host's antibodies is called
A) antigenic variation.
B) lysogenic conversion.
C) virulence.
D) cytopathic effect.
E) cytocidal effect.
Answer: A
Section: 15.2
Bloom's Taxonomy: Knowledge
ASMcue Outcome: 5.4
Learning Outcome: 15.6
3) Most pathogens that gain access through the skin
A) can penetrate intact skin.
B) just infect the skin itself.
C) enter through hair follicles and sweat ducts.
D) must adhere first while their invasive factors allow them to penetrate.
E) must be injected.
Answer: C
Section: 15.1
Bloom's Taxonomy: Knowledge
ASMcue Outcome: 5.4
Learning Outcome: 15.1
1
Copyright © 2016 Pearson Education, Ltd.
,4) The ID50 is
A) a measure of pathogenicity.
B) the dose that will cause an infection in 50 percent of the test population.
C) the dose that will kill some of the test population.
D) the dose that will cause an infection in some of the test population.
E) the dose that will kill 50 percent of the test population.
Answer: B
Section: 15.1
Bloom's Taxonomy: Knowledge
ASMcue Outcome: 5.4
Learning Outcome: 15.2
5) All of the following contribute to a pathogen's invasiveness EXCEPT
A) toxins.
B) capsules.
C) cell wall components.
D) hyaluronidase.
E) coagulases.
Answer: A
Section: 15.2
Bloom's Taxonomy: Comprehension
ASMcue Outcome: 5.4
Learning Outcome: 15.5
6) Which of the following statements is FALSE?
A) Leukocidins destroy neutrophils.
B) Hemolysins lyse red blood cells.
C) Hyaluronidase breaks down substances between cells.
D) Kinase destroys fibrin clots.
E) Coagulase destroys blood clots.
Answer: E
Section: 15.2
Bloom's Taxonomy: Knowledge
ASMcue Outcome: 5.4
Learning Outcome: 15.5
7) Which of the following statements about exotoxins is generally FALSE?
A) They are more potent than endotoxins.
B) They are composed of proteins.
C) They are resistant to heat.
D) They have specific methods of action.
E) They are produced by gram-positive bacteria.
Answer: C
Section: 15.3
Bloom's Taxonomy: Comprehension
ASMcue Outcome: 5.4
Learning Outcome: 15.10
2
Copyright © 2016 Pearson Education, Ltd.
, 8) Endotoxins are
A) associated with gram-positive bacteria.
B) molecules that bind nerve cells.
C) part of the gram-negative cell wall.
D) excreted from the cell.
E) A-B toxins.
Answer: C
Section: 15.3
Bloom's Taxonomy: Knowledge
ASMcue Outcome: 5.4
Learning Outcome: 15.10
9) Which of the following is NOT a membrane-disrupting toxin?
A) A-B toxin
B) hemolysin
C) leukocidin
D) streptolysin O
E) streptolysin S
Answer: A
Section: 15.3
Bloom's Taxonomy: Comprehension
ASMcue Outcome: 5.4
Learning Outcome: 15.11
10) Cytopathic effects are changes in host cells due to
A) viral infections.
B) protozoan infections.
C) fungal infections.
D) bacterial infections.
E) helminthic infections.
Answer: A
Section: 15.4
Bloom's Taxonomy: Comprehension
ASMcue Outcome: 5.4
Learning Outcome: 15.14
3
Copyright © 2016 Pearson Education, Ltd.
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