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Portage Learning | BIOL 252 Human Anatomy & Physiology II
W/Lab Exam 2026-2027 BANK QUESTIONS WITH DETAILED
VERIFIED ANSWERS EXAM QUESTIONS WILL COME
FROM HERE (100% Latest Already Graded A+
Question 1
Which of the following is NOT a component of plasma?
A) Water
B) Electrolytes
C) Hemoglobin
D) Plasma proteins
Answer: C) Hemoglobin
Explanation: Hemoglobin is found within erythrocytes (red blood cells),
not free in plasma. Plasma is composed of approximately 92% water,
7% plasma proteins (albumin, globulins, fibrinogen), and 1% other
solutes including electrolytes, nutrients, and waste products.
Question 2
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What is the primary function of erythrocytes?
A) Phagocytosis of pathogens
B) Transport of oxygen and carbon dioxide
C) Antibody production
D) Blood clotting
Answer: B) Transport of oxygen and carbon dioxide
Explanation: Erythrocytes (red blood cells) contain hemoglobin, which
reversibly binds oxygen for transport from lungs to tissues and carries
carbon dioxide from tissues to lungs. They are anucleate and lack
organelles to maximize space for hemoglobin.
Question 3
Which of the following leukocytes is a granulocyte?
A) Lymphocyte
B) Monocyte
C) Neutrophil
D) Macrophage
Answer: C) Neutrophil
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Explanation: Neutrophils are granulocytes along with eosinophils and
basophils. Granulocytes contain visible cytoplasmic granules and have
lobed nuclei. Lymphocytes and monocytes are agranulocytes with non-
lobed nuclei.
Question 4
What is the normal pH range of arterial blood?
A) 7.15 to 7.25
B) 7.35 to 7.45
C) 7.55 to 7.65
D) 6.95 to 7.05
Answer: B) 7.35 to 7.45
Explanation: Arterial blood pH is tightly regulated between 7.35 and
7.45. Values below 7.35 indicate acidosis, while values above 7.45
indicate alkalosis, both of which can impair cellular function.
Question 5
Which plasma protein is most abundant and contributes to osmotic
pressure?
A) Fibrinogen
B) Globulin
C) Albumin
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D) Hemoglobin
Answer: C) Albumin
Explanation: Albumin constitutes about 60% of plasma proteins and is
the primary contributor to colloid osmotic pressure, which helps
maintain fluid balance between blood and interstitial tissues.
Question 6
Where does hematopoiesis occur in adults?
A) Yellow bone marrow
B) Red bone marrow
C) Liver
D) Spleen
Answer: B) Red bone marrow
Explanation: In adults, hematopoiesis (blood cell formation) occurs
primarily in red bone marrow of flat bones such as the sternum, pelvis,
and ribs. The liver and spleen are active during fetal development but
not in healthy adults.
Question 7
Portage Learning | BIOL 252 Human Anatomy & Physiology II
W/Lab Exam 2026-2027 BANK QUESTIONS WITH DETAILED
VERIFIED ANSWERS EXAM QUESTIONS WILL COME
FROM HERE (100% Latest Already Graded A+
Question 1
Which of the following is NOT a component of plasma?
A) Water
B) Electrolytes
C) Hemoglobin
D) Plasma proteins
Answer: C) Hemoglobin
Explanation: Hemoglobin is found within erythrocytes (red blood cells),
not free in plasma. Plasma is composed of approximately 92% water,
7% plasma proteins (albumin, globulins, fibrinogen), and 1% other
solutes including electrolytes, nutrients, and waste products.
Question 2
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What is the primary function of erythrocytes?
A) Phagocytosis of pathogens
B) Transport of oxygen and carbon dioxide
C) Antibody production
D) Blood clotting
Answer: B) Transport of oxygen and carbon dioxide
Explanation: Erythrocytes (red blood cells) contain hemoglobin, which
reversibly binds oxygen for transport from lungs to tissues and carries
carbon dioxide from tissues to lungs. They are anucleate and lack
organelles to maximize space for hemoglobin.
Question 3
Which of the following leukocytes is a granulocyte?
A) Lymphocyte
B) Monocyte
C) Neutrophil
D) Macrophage
Answer: C) Neutrophil
,3|Page
Explanation: Neutrophils are granulocytes along with eosinophils and
basophils. Granulocytes contain visible cytoplasmic granules and have
lobed nuclei. Lymphocytes and monocytes are agranulocytes with non-
lobed nuclei.
Question 4
What is the normal pH range of arterial blood?
A) 7.15 to 7.25
B) 7.35 to 7.45
C) 7.55 to 7.65
D) 6.95 to 7.05
Answer: B) 7.35 to 7.45
Explanation: Arterial blood pH is tightly regulated between 7.35 and
7.45. Values below 7.35 indicate acidosis, while values above 7.45
indicate alkalosis, both of which can impair cellular function.
Question 5
Which plasma protein is most abundant and contributes to osmotic
pressure?
A) Fibrinogen
B) Globulin
C) Albumin
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D) Hemoglobin
Answer: C) Albumin
Explanation: Albumin constitutes about 60% of plasma proteins and is
the primary contributor to colloid osmotic pressure, which helps
maintain fluid balance between blood and interstitial tissues.
Question 6
Where does hematopoiesis occur in adults?
A) Yellow bone marrow
B) Red bone marrow
C) Liver
D) Spleen
Answer: B) Red bone marrow
Explanation: In adults, hematopoiesis (blood cell formation) occurs
primarily in red bone marrow of flat bones such as the sternum, pelvis,
and ribs. The liver and spleen are active during fetal development but
not in healthy adults.
Question 7
