BIOS 256 Week 5 Quiz Exam 1 (Latest
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A –
Chamberlain
1. Which blood cells are primarily responsible for carrying
oxygen?
A. White blood cells
B. Platelets
C. Red blood cells
D. Plasma
Correct Answer: C
Rationale: Red blood cells contain hemoglobin, which binds and
transports oxygen throughout the body.
2. What is the primary function of platelets?
A. Transport oxygen
B. Blood clotting
C. Immune defense
D. Hormone transport
,Correct Answer: B
Rationale: Platelets (thrombocytes) aggregate at injury sites to form
blood clots and prevent excessive bleeding.
3. Which plasma protein is most abundant and maintains osmotic
pressure?
A. Fibrinogen
B. Albumin
C. Globulin
D. Hemoglobin
Correct Answer: B
Rationale: Albumin maintains plasma osmotic pressure, which
prevents excessive fluid loss from blood vessels.
4. Which leukocytes are first responders during bacterial
infection?
A. Lymphocytes
B. Neutrophils
C. Eosinophils
D. Basophils
Correct Answer: B
Rationale: Neutrophils rapidly respond to bacterial invasion and
perform phagocytosis.
5. Which blood component is involved in immune defense?
,A. Red blood cells
B. Platelets
C. White blood cells
D. Albumin
Correct Answer: C
Rationale: White blood cells protect the body against pathogens and
foreign invaders.
6. Which type of leukocyte is involved in allergic reactions and
parasitic infections?
A. Neutrophils
B. Eosinophils
C. Lymphocytes
D. Monocytes
Correct Answer: B
Rationale: Eosinophils combat parasites and participate in allergic
responses.
7. Which plasma protein is essential for blood clot formation?
A. Albumin
B. Globulin
C. Fibrinogen
D. Hemoglobin
, Correct Answer: C
Rationale: Fibrinogen is converted to fibrin during coagulation to
form blood clots.
8. What is the normal pH range of blood?
A. 6.8–7.0
B. 7.35–7.45
C. 7.5–7.8
D. 6.5–6.9
Correct Answer: B
Rationale: Blood pH is tightly regulated between 7.35 and 7.45 for
optimal enzyme function.
9. Which leukocytes are responsible for antibody production?
A. Neutrophils
B. B lymphocytes
C. Monocytes
D. Eosinophils
Correct Answer: B
Rationale: B lymphocytes differentiate into plasma cells that secrete
antibodies.
10. Which formed element is anucleate and contains hemoglobin?
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A –
Chamberlain
1. Which blood cells are primarily responsible for carrying
oxygen?
A. White blood cells
B. Platelets
C. Red blood cells
D. Plasma
Correct Answer: C
Rationale: Red blood cells contain hemoglobin, which binds and
transports oxygen throughout the body.
2. What is the primary function of platelets?
A. Transport oxygen
B. Blood clotting
C. Immune defense
D. Hormone transport
,Correct Answer: B
Rationale: Platelets (thrombocytes) aggregate at injury sites to form
blood clots and prevent excessive bleeding.
3. Which plasma protein is most abundant and maintains osmotic
pressure?
A. Fibrinogen
B. Albumin
C. Globulin
D. Hemoglobin
Correct Answer: B
Rationale: Albumin maintains plasma osmotic pressure, which
prevents excessive fluid loss from blood vessels.
4. Which leukocytes are first responders during bacterial
infection?
A. Lymphocytes
B. Neutrophils
C. Eosinophils
D. Basophils
Correct Answer: B
Rationale: Neutrophils rapidly respond to bacterial invasion and
perform phagocytosis.
5. Which blood component is involved in immune defense?
,A. Red blood cells
B. Platelets
C. White blood cells
D. Albumin
Correct Answer: C
Rationale: White blood cells protect the body against pathogens and
foreign invaders.
6. Which type of leukocyte is involved in allergic reactions and
parasitic infections?
A. Neutrophils
B. Eosinophils
C. Lymphocytes
D. Monocytes
Correct Answer: B
Rationale: Eosinophils combat parasites and participate in allergic
responses.
7. Which plasma protein is essential for blood clot formation?
A. Albumin
B. Globulin
C. Fibrinogen
D. Hemoglobin
, Correct Answer: C
Rationale: Fibrinogen is converted to fibrin during coagulation to
form blood clots.
8. What is the normal pH range of blood?
A. 6.8–7.0
B. 7.35–7.45
C. 7.5–7.8
D. 6.5–6.9
Correct Answer: B
Rationale: Blood pH is tightly regulated between 7.35 and 7.45 for
optimal enzyme function.
9. Which leukocytes are responsible for antibody production?
A. Neutrophils
B. B lymphocytes
C. Monocytes
D. Eosinophils
Correct Answer: B
Rationale: B lymphocytes differentiate into plasma cells that secrete
antibodies.
10. Which formed element is anucleate and contains hemoglobin?
