BIOS 256 Week 7 Quiz Exam 2 (Latest
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A –
Chamberlain
1. Which blood cells are primarily responsible for oxygen
transport?
A. Leukocytes
B. Erythrocytes
C. Platelets
D. Lymphocytes
Correct Answer: B
Rationale: Erythrocytes contain hemoglobin which binds and
carries oxygen.
2. What component of blood carries nutrients, hormones, and
waste?
A. Plasma
B. Leukocytes
C. Platelets
D. Hemoglobin
Correct Answer: A
,Rationale: Plasma is the liquid portion of blood transporting
nutrients, hormones, and waste.
3. Which cells fight infection?
A. Erythrocytes
B. Leukocytes
C. Platelets
D. Hemoglobin
Correct Answer: B
Rationale: Leukocytes (white blood cells) defend the body against
pathogens.
4. Which cells are responsible for blood clotting?
A. Erythrocytes
B. Leukocytes
C. Platelets
D. Plasma
Correct Answer: C
Rationale: Platelets (thrombocytes) initiate clot formation to prevent
bleeding.
5. Which protein in red blood cells carries oxygen?
A. Albumin
B. Hemoglobin
C. Fibrinogen
,D. Myoglobin
Correct Answer: B
Rationale: Hemoglobin binds oxygen in the lungs and releases it in
tissues.
6. Which type of leukocyte is most abundant?
A. Lymphocytes
B. Neutrophils
C. Eosinophils
D. Basophils
Correct Answer: B
Rationale: Neutrophils make up 50–70% of white blood cells and
combat bacterial infection.
7. Which leukocyte produces antibodies?
A. Neutrophils
B. Eosinophils
C. Lymphocytes
D. Monocytes
Correct Answer: C
Rationale: B-lymphocytes differentiate into plasma cells that
produce antibodies.
8. Which leukocyte is involved in allergic reactions?
, A. Neutrophils
B. Eosinophils
C. Basophils
D. Monocytes
Correct Answer: C
Rationale: Basophils release histamine and mediate inflammation
and allergies.
9. Which leukocyte fights parasitic infections?
A. Neutrophils
B. Eosinophils
C. Basophils
D. Lymphocytes
Correct Answer: B
Rationale: Eosinophils attack parasites and modulate allergic
responses.
10. What is the normal lifespan of an erythrocyte?
A. 10 days
B. 30 days
C. 120 days
D. 365 days
Correct Answer: C
Rationale: Red blood cells typically live about 120 days before being
recycled in the spleen.
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A –
Chamberlain
1. Which blood cells are primarily responsible for oxygen
transport?
A. Leukocytes
B. Erythrocytes
C. Platelets
D. Lymphocytes
Correct Answer: B
Rationale: Erythrocytes contain hemoglobin which binds and
carries oxygen.
2. What component of blood carries nutrients, hormones, and
waste?
A. Plasma
B. Leukocytes
C. Platelets
D. Hemoglobin
Correct Answer: A
,Rationale: Plasma is the liquid portion of blood transporting
nutrients, hormones, and waste.
3. Which cells fight infection?
A. Erythrocytes
B. Leukocytes
C. Platelets
D. Hemoglobin
Correct Answer: B
Rationale: Leukocytes (white blood cells) defend the body against
pathogens.
4. Which cells are responsible for blood clotting?
A. Erythrocytes
B. Leukocytes
C. Platelets
D. Plasma
Correct Answer: C
Rationale: Platelets (thrombocytes) initiate clot formation to prevent
bleeding.
5. Which protein in red blood cells carries oxygen?
A. Albumin
B. Hemoglobin
C. Fibrinogen
,D. Myoglobin
Correct Answer: B
Rationale: Hemoglobin binds oxygen in the lungs and releases it in
tissues.
6. Which type of leukocyte is most abundant?
A. Lymphocytes
B. Neutrophils
C. Eosinophils
D. Basophils
Correct Answer: B
Rationale: Neutrophils make up 50–70% of white blood cells and
combat bacterial infection.
7. Which leukocyte produces antibodies?
A. Neutrophils
B. Eosinophils
C. Lymphocytes
D. Monocytes
Correct Answer: C
Rationale: B-lymphocytes differentiate into plasma cells that
produce antibodies.
8. Which leukocyte is involved in allergic reactions?
, A. Neutrophils
B. Eosinophils
C. Basophils
D. Monocytes
Correct Answer: C
Rationale: Basophils release histamine and mediate inflammation
and allergies.
9. Which leukocyte fights parasitic infections?
A. Neutrophils
B. Eosinophils
C. Basophils
D. Lymphocytes
Correct Answer: B
Rationale: Eosinophils attack parasites and modulate allergic
responses.
10. What is the normal lifespan of an erythrocyte?
A. 10 days
B. 30 days
C. 120 days
D. 365 days
Correct Answer: C
Rationale: Red blood cells typically live about 120 days before being
recycled in the spleen.
