BIO 139 KCTCS ACTUAL EXAM 2026 QUESTIONS WITH SOLUTIONS GRADED A+

BIO 139 KCTCS ACTUAL EXAM 2026
QUESTIONS WITH SOLUTIONS GRADED A+



◉ What do RBCs Transport? Answer: Gases (Oxygen and Carbon
Dioxide)
Nutrients/Waste
Hormone


◉ What do RBCs Regulate? Answer: Body Temp
Body pH
Fluid Balance


◉ What do RBCs Protect against? Answer: Bleeding/Trauma
Infection/Invasion


◉ Describe separated blood. Answer:


◉ Hematocrit. Answer: the ratio of the volume of red blood cells to the
total volume of blood

,◉ Normal hematocrit value. Answer: 42% - 47%


◉ Normal pH of Blood. Answer: 7.35-7.45


◉ Adult blood volume. Answer: 5 liters


◉ Why does the color of blood vary. Answer: Oxygen Saturation


◉ What component of blood contributes the most to blood viscosity.
Answer: Erythrocytes (RBC)


◉ The diffusion of water across a selectively permeable membrane is
called. Answer: Osmosis


◉ Plasma. Answer: 55% of blood


◉ What % of plasma is water? Answer: 92%


◉ What % of plasma is protein? Answer: 7%


◉ What % of plasma is other solutes? Answer: 1%

, ◉ proteins in plasma. Answer: albumins 58%
globulins 37%
fibrinogen 4%
regulatory proteins <1%


◉ solutes in blood plasma. Answer: -waste (urea & ammonia)
-electrolytes (salts dissolved in solution)
-organic nutrients (lipids, glucose, amino acids)
-respiratory gases


◉ Erythrocytes. Answer: RBC
NO Nucleus
NO mitochondria or organelles


◉ Structure of RBC. Answer: Small and highly specialized discs
Thin in middle and thicker at edge


◉ RBCs in whole blood. Answer:


◉ Main function of RBCs. Answer: Carry Oxygen