TEST BANK IMMUNOLOGY AND SEROLOGY IN
LABORATORY MEDICAL 6TH EDITION TIURGEON
(CHAPTER 1-32) QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) Q&A 2026
|INSTANT DOWNLOAD PDF
1. Which of the following best describes the primary function
of the immune system?
A. Production of hormones
B. Regulation of body temperature
C. Defense against foreign pathogens
D. Digestion of nutrients
Rationale: The immune system protects the body from
infectious agents and abnormal cells.
Correct answer: C
2. The first line of defense in innate immunity includes:
A. Antibodies
B. Skin and mucous membranes
C. T lymphocytes
D. Memory cells
Rationale: Physical barriers prevent pathogen entry.
Correct answer: B
,3. Antibodies are produced by:
A. T cells
B. B cells
C. Macrophages
D. Neutrophils
Rationale: B lymphocytes differentiate into plasma cells that
produce antibodies.
Correct answer: B
4. Which immunoglobulin is most abundant in serum?
A. IgA
B. IgE
C. IgG
D. IgM
Rationale: IgG is the most prevalent antibody in circulation.
Correct answer: C
5. The main role of IgA is:
A. Allergic reactions
B. Mucosal immunity
C. Complement activation
D. Primary immune response
,Rationale: IgA protects mucosal surfaces such as respiratory
and gastrointestinal tracts.
Correct answer: B
6. The complement system is primarily involved in:
A. DNA replication
B. Cell signaling
C. Pathogen lysis and inflammation
D. Protein synthesis
Rationale: Complement proteins enhance immune responses
and destroy pathogens.
Correct answer: C
7. Antigen presenting cells (APCs) include all EXCEPT:
A. Macrophages
B. Dendritic cells
C. B cells
D. Red blood cells
Rationale: RBCs do not present antigens.
Correct answer: D
8. The adaptive immune system is characterized by:
, A. Non-specific response
B. Lack of memory
C. Specific antigen recognition
D. Immediate response only
Rationale: Adaptive immunity is highly specific and has
memory.
Correct answer: C
9. Which cells are responsible for cell-mediated immunity?
A. B cells
B. T lymphocytes
C. Plasma cells
D. Mast cells
Rationale: T cells mediate cellular immune responses.
Correct answer: B
10. Helper T cells are also known as:
A. CD4+ cells
B. CD8+ cells
C. NK cells
D. B cells
Rationale: CD4+ T cells assist other immune cells.
Correct answer: A
LABORATORY MEDICAL 6TH EDITION TIURGEON
(CHAPTER 1-32) QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) Q&A 2026
|INSTANT DOWNLOAD PDF
1. Which of the following best describes the primary function
of the immune system?
A. Production of hormones
B. Regulation of body temperature
C. Defense against foreign pathogens
D. Digestion of nutrients
Rationale: The immune system protects the body from
infectious agents and abnormal cells.
Correct answer: C
2. The first line of defense in innate immunity includes:
A. Antibodies
B. Skin and mucous membranes
C. T lymphocytes
D. Memory cells
Rationale: Physical barriers prevent pathogen entry.
Correct answer: B
,3. Antibodies are produced by:
A. T cells
B. B cells
C. Macrophages
D. Neutrophils
Rationale: B lymphocytes differentiate into plasma cells that
produce antibodies.
Correct answer: B
4. Which immunoglobulin is most abundant in serum?
A. IgA
B. IgE
C. IgG
D. IgM
Rationale: IgG is the most prevalent antibody in circulation.
Correct answer: C
5. The main role of IgA is:
A. Allergic reactions
B. Mucosal immunity
C. Complement activation
D. Primary immune response
,Rationale: IgA protects mucosal surfaces such as respiratory
and gastrointestinal tracts.
Correct answer: B
6. The complement system is primarily involved in:
A. DNA replication
B. Cell signaling
C. Pathogen lysis and inflammation
D. Protein synthesis
Rationale: Complement proteins enhance immune responses
and destroy pathogens.
Correct answer: C
7. Antigen presenting cells (APCs) include all EXCEPT:
A. Macrophages
B. Dendritic cells
C. B cells
D. Red blood cells
Rationale: RBCs do not present antigens.
Correct answer: D
8. The adaptive immune system is characterized by:
, A. Non-specific response
B. Lack of memory
C. Specific antigen recognition
D. Immediate response only
Rationale: Adaptive immunity is highly specific and has
memory.
Correct answer: C
9. Which cells are responsible for cell-mediated immunity?
A. B cells
B. T lymphocytes
C. Plasma cells
D. Mast cells
Rationale: T cells mediate cellular immune responses.
Correct answer: B
10. Helper T cells are also known as:
A. CD4+ cells
B. CD8+ cells
C. NK cells
D. B cells
Rationale: CD4+ T cells assist other immune cells.
Correct answer: A
