1. Dallas College
2. BIOL 2401
A&P II Exam 2 - Collin College
Questions and Answers 2026 Latest Update
What are the main functions of blood? Ans:
transportation of gases, nutrients, and waste
regulation of pH and temperature
protection against pathogens
What are the components of blood? Ans: plasma, red blood cells
(RBCs), white blood cells (leukocytes), and platelets
How does plasma differ from serum? Ans: Plasma is the liquid
component of blood that contains water, electrolytes, proteins,
hormones, and waste products.
Serum is plasma without clotting factors.
What is the approximate percentage of plasma in normal whole
blood? Ans: about 55%
What is hematocrit? Ans: the ratio of the volume of red blood cells
to the total volume of blood (packed cell volume/PCV)
What are the normal ranges for hematocrit? Ans: 38% to 52% for
men and 34% to 46% for women
© 2025 All rights reserved
, What is the normal range of blood pH? Ans: 7.35 to 7.45
What are the three major groups of plasma proteins? Ans:
albumins, globulins (including immunoglobulins), and fibrinogen
What are the most abundant plasma proteins? Ans: albumins
What is the origin of plasma proteins? Ans: Liver
How does the structure of a red blood cell (RBC) affect its
functions? Ans: They are biconcave in shape, allowing for
increased surface area for gas exchange and flexibility to navigate
through capillaries.
What is hemoglobin (Hb)? Ans: a protein in RBCs that carries
oxygen
How does the structure of hemoglobin relate to its function? Ans:
Its structure allows it to bind oxygen in the lungs and release it in
tissues.
What is a rouleaux? Ans: A stack or chain of red blood cells
formed when they stick together
What is the normal amount of hemoglobin in an adult male? Ans:
14-18 g/dL whole blood
What is the normal amount of hemoglobin in an adult female?
Ans: 12-16 g/dL whole blood
How does fetal hemoglobin differ from adult hemoglobin? Ans:
Fetal hemoglobin (HbF) has a higher affinity for oxygen than adult
hemoglobin (HbA), facilitating oxygen transfer from mother to
fetus.
What is oxyhemoglobin? Ans: hemoglobin bound to oxygen.
© 2025 All rights reserved
2. BIOL 2401
A&P II Exam 2 - Collin College
Questions and Answers 2026 Latest Update
What are the main functions of blood? Ans:
transportation of gases, nutrients, and waste
regulation of pH and temperature
protection against pathogens
What are the components of blood? Ans: plasma, red blood cells
(RBCs), white blood cells (leukocytes), and platelets
How does plasma differ from serum? Ans: Plasma is the liquid
component of blood that contains water, electrolytes, proteins,
hormones, and waste products.
Serum is plasma without clotting factors.
What is the approximate percentage of plasma in normal whole
blood? Ans: about 55%
What is hematocrit? Ans: the ratio of the volume of red blood cells
to the total volume of blood (packed cell volume/PCV)
What are the normal ranges for hematocrit? Ans: 38% to 52% for
men and 34% to 46% for women
© 2025 All rights reserved
, What is the normal range of blood pH? Ans: 7.35 to 7.45
What are the three major groups of plasma proteins? Ans:
albumins, globulins (including immunoglobulins), and fibrinogen
What are the most abundant plasma proteins? Ans: albumins
What is the origin of plasma proteins? Ans: Liver
How does the structure of a red blood cell (RBC) affect its
functions? Ans: They are biconcave in shape, allowing for
increased surface area for gas exchange and flexibility to navigate
through capillaries.
What is hemoglobin (Hb)? Ans: a protein in RBCs that carries
oxygen
How does the structure of hemoglobin relate to its function? Ans:
Its structure allows it to bind oxygen in the lungs and release it in
tissues.
What is a rouleaux? Ans: A stack or chain of red blood cells
formed when they stick together
What is the normal amount of hemoglobin in an adult male? Ans:
14-18 g/dL whole blood
What is the normal amount of hemoglobin in an adult female?
Ans: 12-16 g/dL whole blood
How does fetal hemoglobin differ from adult hemoglobin? Ans:
Fetal hemoglobin (HbF) has a higher affinity for oxygen than adult
hemoglobin (HbA), facilitating oxygen transfer from mother to
fetus.
What is oxyhemoglobin? Ans: hemoglobin bound to oxygen.
© 2025 All rights reserved
