BIOS 256 WEEK 2 QUIZ FINAL EXAM
(Latest Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A –
Chamberlain
1. Which WBC is the first to arrive at a site of bacterial infection?
A. Lymphocytes
B. Neutrophils
C. Eosinophils
D. Basophils
Correct Answer: B
Rationale: Neutrophils are the first responders and perform
phagocytosis.
2. Which WBC combats parasitic infections?
A. Lymphocytes
B. Neutrophils
C. Eosinophils
D. Basophils
,Correct Answer: C
Rationale: Eosinophils target multicellular parasites and regulate
allergies.
3. Which WBC releases histamine in allergic reactions?
A. Basophils and mast cells
B. Neutrophils
C. B cells
D. T cells
Correct Answer: A
Rationale: Basophils and mast cells release histamine to trigger
inflammation and allergy symptoms.
4. Which lymphocyte is responsible for antibody production?
A. T cells
B. B cells
C. NK cells
D. Monocytes
Correct Answer: B
Rationale: B cells differentiate into plasma cells to secrete
antibodies.
5. Which lymphocyte directly kills virus-infected cells?
,A. Helper T cells
B. Cytotoxic T cells
C. B cells
D. Macrophages
Correct Answer: B
Rationale: Cytotoxic T cells recognize and destroy infected or
abnormal cells.
6. Which organ is the site of T cell maturation?
A. Bone marrow
B. Thymus
C. Spleen
D. Lymph nodes
Correct Answer: B
Rationale: T cells mature in the thymus to gain immune
competence.
7. Which organ filters lymph and stores lymphocytes?
A. Spleen
B. Lymph nodes
C. Thymus
D. Bone marrow
, Correct Answer: B
Rationale: Lymph nodes trap pathogens and contain immune cells
for adaptive responses.
8. Which organ filters blood and removes old red blood cells?
A. Liver
B. Spleen
C. Thymus
D. Kidney
Correct Answer: B
Rationale: The spleen removes old RBCs and supports immune
surveillance.
9. What is the main function of the lymphatic system?
A. Transport oxygen
B. Return tissue fluid to the bloodstream and support immunity
C. Digest nutrients
D. Produce hormones
Correct Answer: B
Rationale: Lymphatic vessels maintain fluid balance and facilitate
immune responses.
10. Which chemical mediators trigger inflammation?
(Latest Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A –
Chamberlain
1. Which WBC is the first to arrive at a site of bacterial infection?
A. Lymphocytes
B. Neutrophils
C. Eosinophils
D. Basophils
Correct Answer: B
Rationale: Neutrophils are the first responders and perform
phagocytosis.
2. Which WBC combats parasitic infections?
A. Lymphocytes
B. Neutrophils
C. Eosinophils
D. Basophils
,Correct Answer: C
Rationale: Eosinophils target multicellular parasites and regulate
allergies.
3. Which WBC releases histamine in allergic reactions?
A. Basophils and mast cells
B. Neutrophils
C. B cells
D. T cells
Correct Answer: A
Rationale: Basophils and mast cells release histamine to trigger
inflammation and allergy symptoms.
4. Which lymphocyte is responsible for antibody production?
A. T cells
B. B cells
C. NK cells
D. Monocytes
Correct Answer: B
Rationale: B cells differentiate into plasma cells to secrete
antibodies.
5. Which lymphocyte directly kills virus-infected cells?
,A. Helper T cells
B. Cytotoxic T cells
C. B cells
D. Macrophages
Correct Answer: B
Rationale: Cytotoxic T cells recognize and destroy infected or
abnormal cells.
6. Which organ is the site of T cell maturation?
A. Bone marrow
B. Thymus
C. Spleen
D. Lymph nodes
Correct Answer: B
Rationale: T cells mature in the thymus to gain immune
competence.
7. Which organ filters lymph and stores lymphocytes?
A. Spleen
B. Lymph nodes
C. Thymus
D. Bone marrow
, Correct Answer: B
Rationale: Lymph nodes trap pathogens and contain immune cells
for adaptive responses.
8. Which organ filters blood and removes old red blood cells?
A. Liver
B. Spleen
C. Thymus
D. Kidney
Correct Answer: B
Rationale: The spleen removes old RBCs and supports immune
surveillance.
9. What is the main function of the lymphatic system?
A. Transport oxygen
B. Return tissue fluid to the bloodstream and support immunity
C. Digest nutrients
D. Produce hormones
Correct Answer: B
Rationale: Lymphatic vessels maintain fluid balance and facilitate
immune responses.
10. Which chemical mediators trigger inflammation?
