Bio 139 KCTCS- Exam 1 (2026) Updated:
EXAM QUESTIONS WITH ACCURATE
ANSWERS | GET IT RIGHT!!
What are the three functions of RBC? -CORRECTANSWER Transportation, Regulation,
and Protection
What do RBCs Transport? -CORRECTANSWER Gases (Oxygen and Carbon Dioxide)
Nutrients/Waste
Hormone
What do RBCs Regulate? -CORRECTANSWER Body Temp
Body pH
Fluid Balance
What do RBCs Protect against? -CORRECTANSWER Bleeding/Trauma
Infection/Invasion
Describe separated blood -CORRECTANSWER
Hematocrit -CORRECTANSWER the ratio of the volume of red blood cells to the total
volume of blood
,Normal hematocrit value -CORRECTANSWER 42% - 47%
Normal pH of Blood -CORRECTANSWER 7.35-7.45
Adult blood volume -CORRECTANSWER 5 liters
Why does the color of blood vary -CORRECTANSWER Oxygen Saturation
What component of blood contributes the most to blood viscosity -CORRECTANSWER
Erythrocytes (RBC)
The diffusion of water across a selectively permeable membrane is called -
CORRECTANSWER Osmosis
Plasma -CORRECTANSWER 55% of blood
What % of plasma is water? -CORRECTANSWER 92%
What % of plasma is protein? -CORRECTANSWER 7%
What % of plasma is other solutes? -CORRECTANSWER 1%
proteins in plasma -CORRECTANSWER albumins 58%
, globulins 37%
fibrinogen 4%
regulatory proteins <1%
solutes in blood plasma -CORRECTANSWER -waste (urea & ammonia)
-electrolytes (salts dissolved in solution)
-organic nutrients (lipids, glucose, amino acids)
-respiratory gases
Erythrocytes -CORRECTANSWER RBC
NO Nucleus
NO mitochondria or organelles
Structure of RBC -CORRECTANSWER Small and highly specialized discs
Thin in middle and thicker at edge
RBCs in whole blood -CORRECTANSWER
Main function of RBCs -CORRECTANSWER Carry Oxygen
Hemoglobin -CORRECTANSWER An iron-containing protein in red blood cells that
reversibly binds oxygen.
EXAM QUESTIONS WITH ACCURATE
ANSWERS | GET IT RIGHT!!
What are the three functions of RBC? -CORRECTANSWER Transportation, Regulation,
and Protection
What do RBCs Transport? -CORRECTANSWER Gases (Oxygen and Carbon Dioxide)
Nutrients/Waste
Hormone
What do RBCs Regulate? -CORRECTANSWER Body Temp
Body pH
Fluid Balance
What do RBCs Protect against? -CORRECTANSWER Bleeding/Trauma
Infection/Invasion
Describe separated blood -CORRECTANSWER
Hematocrit -CORRECTANSWER the ratio of the volume of red blood cells to the total
volume of blood
,Normal hematocrit value -CORRECTANSWER 42% - 47%
Normal pH of Blood -CORRECTANSWER 7.35-7.45
Adult blood volume -CORRECTANSWER 5 liters
Why does the color of blood vary -CORRECTANSWER Oxygen Saturation
What component of blood contributes the most to blood viscosity -CORRECTANSWER
Erythrocytes (RBC)
The diffusion of water across a selectively permeable membrane is called -
CORRECTANSWER Osmosis
Plasma -CORRECTANSWER 55% of blood
What % of plasma is water? -CORRECTANSWER 92%
What % of plasma is protein? -CORRECTANSWER 7%
What % of plasma is other solutes? -CORRECTANSWER 1%
proteins in plasma -CORRECTANSWER albumins 58%
, globulins 37%
fibrinogen 4%
regulatory proteins <1%
solutes in blood plasma -CORRECTANSWER -waste (urea & ammonia)
-electrolytes (salts dissolved in solution)
-organic nutrients (lipids, glucose, amino acids)
-respiratory gases
Erythrocytes -CORRECTANSWER RBC
NO Nucleus
NO mitochondria or organelles
Structure of RBC -CORRECTANSWER Small and highly specialized discs
Thin in middle and thicker at edge
RBCs in whole blood -CORRECTANSWER
Main function of RBCs -CORRECTANSWER Carry Oxygen
Hemoglobin -CORRECTANSWER An iron-containing protein in red blood cells that
reversibly binds oxygen.
