MCV4U UNIT 4 TEST BANK 2026 VERIFIED
MATHEMATICAL QUESTIONS ANSWERS
GRADED A+
●● What is the composition of blood plasma?
Answer: ~90% water, proteins (albumin, globulins, fibrinogen),
electrolytes, nutrients, nitrogenous wastes.
●● What is the role of albumin in blood plasma?
Answer: Maintains osmotic pressure, keeping fluid in the blood.
●● What are erythrocytes and their main function?
Answer: Red blood cells (RBCs) that transport oxygen; they are
biconcave and lack a nucleus.
●● What is hemoglobin and its function?
Answer: A protein in RBCs that binds oxygen; made in red bone marrow
and controlled by erythropoietin.
●● What is hematocrit?
Answer: The percentage of RBCs in blood.
MATHEMATICAL QUESTIONS ANSWERS
GRADED A+
●● What is the composition of blood plasma?
Answer: ~90% water, proteins (albumin, globulins, fibrinogen),
electrolytes, nutrients, nitrogenous wastes.
●● What is the role of albumin in blood plasma?
Answer: Maintains osmotic pressure, keeping fluid in the blood.
●● What are erythrocytes and their main function?
Answer: Red blood cells (RBCs) that transport oxygen; they are
biconcave and lack a nucleus.
●● What is hemoglobin and its function?
Answer: A protein in RBCs that binds oxygen; made in red bone marrow
and controlled by erythropoietin.
●● What is hematocrit?
Answer: The percentage of RBCs in blood.
