BIOS 242 Week 6 Quiz Exam 2 (Latest
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. Which organ is the primary site of T cell maturation?
A. Bone marrow
B. Spleen
C. Thymus
D. Lymph nodes
Correct Answer: C. Thymus
Rationale: The thymus is where T lymphocytes mature and become
immunocompetent.
2. Which type of immunity involves antibodies?
A. Cell-mediated
B. Humoral
C. Innate
D. Passive
Correct Answer: B. Humoral
,Rationale: Humoral immunity is mediated by antibodies produced
by B cells.
3. What is the function of cytotoxic T cells?
A. Produce antibodies
B. Kill infected cells
C. Activate B cells
D. Release histamine
Correct Answer: B. Kill infected cells
Rationale: Cytotoxic T cells destroy virus-infected and abnormal
cells.
4. Which cells present antigens to T cells?
A. RBCs
B. Platelets
C. Antigen-presenting cells
D. Basophils
Correct Answer: C. Antigen-presenting cells
Rationale: APCs display antigens to activate T cells.
5. Which molecule is recognized by T cells?
A. Antibody
B. Antigen-MHC complex
C. Hemoglobin
D. Fibrin
,Correct Answer: B. Antigen-MHC complex
Rationale: T cells recognize antigens presented with MHC
molecules.
6. What is clonal selection?
A. RBC production
B. Activation of specific lymphocytes
C. Clot formation
D. WBC destruction
Correct Answer: B. Activation of specific lymphocytes
Rationale: Only lymphocytes specific to an antigen are activated.
7. Which cells become plasma cells?
A. T cells
B. B cells
C. Neutrophils
D. Monocytes
Correct Answer: B. B cells
Rationale: Activated B cells differentiate into antibody-secreting
plasma cells.
8. What is the function of helper T cells?
A. Kill pathogens
B. Activate other immune cells
C. Produce antibodies
, D. Form clots
Correct Answer: B. Activate other immune cells
Rationale: Helper T cells coordinate immune responses.
9. Which immunity is immediate but short-lived?
A. Active
B. Passive
C. Adaptive
D. Artificial
Correct Answer: B. Passive
Rationale: Passive immunity provides immediate protection but no
memory.
10. Which class of antibody is most abundant?
A. IgA
B. IgM
C. IgG
D. IgE
Correct Answer: C. IgG
Rationale: IgG is the most common antibody in blood.
11. Which antibody is first produced in an immune response?
A. IgA
B. IgG
C. IgM
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. Which organ is the primary site of T cell maturation?
A. Bone marrow
B. Spleen
C. Thymus
D. Lymph nodes
Correct Answer: C. Thymus
Rationale: The thymus is where T lymphocytes mature and become
immunocompetent.
2. Which type of immunity involves antibodies?
A. Cell-mediated
B. Humoral
C. Innate
D. Passive
Correct Answer: B. Humoral
,Rationale: Humoral immunity is mediated by antibodies produced
by B cells.
3. What is the function of cytotoxic T cells?
A. Produce antibodies
B. Kill infected cells
C. Activate B cells
D. Release histamine
Correct Answer: B. Kill infected cells
Rationale: Cytotoxic T cells destroy virus-infected and abnormal
cells.
4. Which cells present antigens to T cells?
A. RBCs
B. Platelets
C. Antigen-presenting cells
D. Basophils
Correct Answer: C. Antigen-presenting cells
Rationale: APCs display antigens to activate T cells.
5. Which molecule is recognized by T cells?
A. Antibody
B. Antigen-MHC complex
C. Hemoglobin
D. Fibrin
,Correct Answer: B. Antigen-MHC complex
Rationale: T cells recognize antigens presented with MHC
molecules.
6. What is clonal selection?
A. RBC production
B. Activation of specific lymphocytes
C. Clot formation
D. WBC destruction
Correct Answer: B. Activation of specific lymphocytes
Rationale: Only lymphocytes specific to an antigen are activated.
7. Which cells become plasma cells?
A. T cells
B. B cells
C. Neutrophils
D. Monocytes
Correct Answer: B. B cells
Rationale: Activated B cells differentiate into antibody-secreting
plasma cells.
8. What is the function of helper T cells?
A. Kill pathogens
B. Activate other immune cells
C. Produce antibodies
, D. Form clots
Correct Answer: B. Activate other immune cells
Rationale: Helper T cells coordinate immune responses.
9. Which immunity is immediate but short-lived?
A. Active
B. Passive
C. Adaptive
D. Artificial
Correct Answer: B. Passive
Rationale: Passive immunity provides immediate protection but no
memory.
10. Which class of antibody is most abundant?
A. IgA
B. IgM
C. IgG
D. IgE
Correct Answer: C. IgG
Rationale: IgG is the most common antibody in blood.
11. Which antibody is first produced in an immune response?
A. IgA
B. IgG
C. IgM
