BIOS 256 WEEK 5 QUIZ EXAM 2
(Latest Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A –
Chamberlain
1. What is the primary function of red blood cells?
A. Blood clotting
B. Oxygen transport
C. Immune defense
D. Hormone transport
Correct Answer: B
Rationale: Red blood cells contain hemoglobin, which binds and
carries oxygen to tissues.
2. Which formed element is responsible for clot formation?
A. Platelets
B. Red blood cells
C. White blood cells
D. Plasma
,Correct Answer: A
Rationale: Platelets aggregate at injury sites to form a plug and
initiate coagulation.
3. Which plasma protein is most abundant?
A. Fibrinogen
B. Albumin
C. Globulin
D. Hemoglobin
Correct Answer: B
Rationale: Albumin maintains plasma osmotic pressure and is the
most abundant plasma protein.
4. Which WBC is the first responder to bacterial infection?
A. Lymphocytes
B. Neutrophils
C. Eosinophils
D. Basophils
Correct Answer: B
Rationale: Neutrophils perform phagocytosis and respond rapidly to
bacterial invasion.
5. Which WBC increases during parasitic infections?
,A. Neutrophils
B. Eosinophils
C. Basophils
D. Lymphocytes
Correct Answer: B
Rationale: Eosinophils release toxic proteins to combat parasites.
6. Which plasma protein is converted to fibrin during clotting?
A. Albumin
B. Globulin
C. Fibrinogen
D. Hemoglobin
Correct Answer: C
Rationale: Fibrinogen is cleaved to fibrin by thrombin to form a
clot.
7. Which WBC releases histamine in allergic reactions?
A. Neutrophils
B. Basophils
C. Eosinophils
D. Lymphocytes
Correct Answer: B
Rationale: Basophils release histamine, promoting inflammation
during allergies.
, 8. Which blood type has no A or B antigens?
A. A
B. B
C. AB
D. O
Correct Answer: D
Rationale: Type O blood has neither antigen and can be donated to
any blood type.
9. Which blood type is the universal recipient?
A. A
B. B
C. AB
D. O
Correct Answer: C
Rationale: Type AB blood has both A and B antigens and no
antibodies, allowing it to receive all types.
10. Which organ produces most clotting factors?
A. Spleen
B. Liver
C. Kidney
D. Bone marrow
(Latest Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A –
Chamberlain
1. What is the primary function of red blood cells?
A. Blood clotting
B. Oxygen transport
C. Immune defense
D. Hormone transport
Correct Answer: B
Rationale: Red blood cells contain hemoglobin, which binds and
carries oxygen to tissues.
2. Which formed element is responsible for clot formation?
A. Platelets
B. Red blood cells
C. White blood cells
D. Plasma
,Correct Answer: A
Rationale: Platelets aggregate at injury sites to form a plug and
initiate coagulation.
3. Which plasma protein is most abundant?
A. Fibrinogen
B. Albumin
C. Globulin
D. Hemoglobin
Correct Answer: B
Rationale: Albumin maintains plasma osmotic pressure and is the
most abundant plasma protein.
4. Which WBC is the first responder to bacterial infection?
A. Lymphocytes
B. Neutrophils
C. Eosinophils
D. Basophils
Correct Answer: B
Rationale: Neutrophils perform phagocytosis and respond rapidly to
bacterial invasion.
5. Which WBC increases during parasitic infections?
,A. Neutrophils
B. Eosinophils
C. Basophils
D. Lymphocytes
Correct Answer: B
Rationale: Eosinophils release toxic proteins to combat parasites.
6. Which plasma protein is converted to fibrin during clotting?
A. Albumin
B. Globulin
C. Fibrinogen
D. Hemoglobin
Correct Answer: C
Rationale: Fibrinogen is cleaved to fibrin by thrombin to form a
clot.
7. Which WBC releases histamine in allergic reactions?
A. Neutrophils
B. Basophils
C. Eosinophils
D. Lymphocytes
Correct Answer: B
Rationale: Basophils release histamine, promoting inflammation
during allergies.
, 8. Which blood type has no A or B antigens?
A. A
B. B
C. AB
D. O
Correct Answer: D
Rationale: Type O blood has neither antigen and can be donated to
any blood type.
9. Which blood type is the universal recipient?
A. A
B. B
C. AB
D. O
Correct Answer: C
Rationale: Type AB blood has both A and B antigens and no
antibodies, allowing it to receive all types.
10. Which organ produces most clotting factors?
A. Spleen
B. Liver
C. Kidney
D. Bone marrow
