EXAM 3 BIOS 242- CHAMBERLAIN 2024/2025 COMPREHENSIVE
QUESTIONS AND VERIFIED ANSWERS/ COMPLETE SOLUTIONS
WITH RATIONALES |GET IT 100% ACCURATE!! ALREADY
PASSED!!
Question 1
The first line of defense in the human body is a surface protection composed of which types of
barriers that keep microbes from penetrating sterile body compartments?
A) Cellular and chemical
B) Cellular and physiological
C) Anatomical and physiological
D) Anatomical and cellular
E) Chemical and specific
Correct Answer: C) Anatomical and physiological
Rationale: The first line of defense consists of physical structures (anatomical) like
skin and mucous membranes, and functional processes (physiological) like pH,
enzymes, and reflexes.
Question 2
The second line of defense is a system that comes immediately into play if infectious agents
make it past the surface defenses. This system is described as:
A) Anatomical and physiological
B) Specific and adaptive
C) Cellular and chemical
D) Humoral and cell-mediated
E) Long-term and memory-based
Correct Answer: C) Cellular and chemical
, Rationale: The second line of defense involves cells like phagocytes and various
chemical mediators (e.g., inflammatory mediators, antimicrobial proteins).
Question 3
The third line of defense includes host defenses that must be developed uniquely for each
microbe through the action of specialized white blood cells. This defense is characterized as:
A) Innate and immediate
B) Non-specific and rapid
C) Specific and adaptive
D) Surface and barrier-based
E) Inflammatory and fever-inducing
Correct Answer: C) Specific and adaptive
Rationale: The third line of defense is adaptive immunity, which targets specific
pathogens and involves memory for future encounters.
Question 4
Which of the following is included in the first line of defense?
A) Phagocytosis
B) Inflammation
C) Fever
D) Physical and chemical barriers
E) B and T cells
Correct Answer: D) Physical and chemical barriers
Rationale: The first line of defense consists of external and internal surface barriers
that prevent pathogen entry.
QUESTIONS AND VERIFIED ANSWERS/ COMPLETE SOLUTIONS
WITH RATIONALES |GET IT 100% ACCURATE!! ALREADY
PASSED!!
Question 1
The first line of defense in the human body is a surface protection composed of which types of
barriers that keep microbes from penetrating sterile body compartments?
A) Cellular and chemical
B) Cellular and physiological
C) Anatomical and physiological
D) Anatomical and cellular
E) Chemical and specific
Correct Answer: C) Anatomical and physiological
Rationale: The first line of defense consists of physical structures (anatomical) like
skin and mucous membranes, and functional processes (physiological) like pH,
enzymes, and reflexes.
Question 2
The second line of defense is a system that comes immediately into play if infectious agents
make it past the surface defenses. This system is described as:
A) Anatomical and physiological
B) Specific and adaptive
C) Cellular and chemical
D) Humoral and cell-mediated
E) Long-term and memory-based
Correct Answer: C) Cellular and chemical
, Rationale: The second line of defense involves cells like phagocytes and various
chemical mediators (e.g., inflammatory mediators, antimicrobial proteins).
Question 3
The third line of defense includes host defenses that must be developed uniquely for each
microbe through the action of specialized white blood cells. This defense is characterized as:
A) Innate and immediate
B) Non-specific and rapid
C) Specific and adaptive
D) Surface and barrier-based
E) Inflammatory and fever-inducing
Correct Answer: C) Specific and adaptive
Rationale: The third line of defense is adaptive immunity, which targets specific
pathogens and involves memory for future encounters.
Question 4
Which of the following is included in the first line of defense?
A) Phagocytosis
B) Inflammation
C) Fever
D) Physical and chemical barriers
E) B and T cells
Correct Answer: D) Physical and chemical barriers
Rationale: The first line of defense consists of external and internal surface barriers
that prevent pathogen entry.
