Bio 253
Bio 253 Exam 3 Study Questions with Verified
Solutions 2025
Functions of blood -Correct Answer ✔Transport it substances
Regulation of temperature
Gas exchange
Regulate ph and other hormones
Protects blood loss through clotting
Blood components -Correct Answer ✔45% formed elements 55% plasma
erythrocytes, leukocytes, platelets, plasma
What do erythrocytes (RBC) do -Correct Answer ✔Hemoglobin (protein) binds to
RBC and carries O2
Leukocytes (wbc) function -Correct Answer ✔Whole cells that protect against
infection and foreign invaders.
Platelets (thrombocytes) function -Correct Answer ✔Clotting and coagulation
Plasma function -Correct Answer ✔Makes up blood volume and carries formed
elements .
components of plasma -Correct Answer ✔albumin, globulin, fibrinogen ( water,
protein other solutions)
Albumin (plasma protein) functions -Correct Answer ✔Maintain osmotic pressure
Bio 253
, Bio 253
Globulins ( antibodies) -Correct Answer ✔Essential for immunity mechanism bind
to a foreign object
Fibrinogen ( plasma protein) -Correct Answer ✔Role in clotting only when
necessary
Difference between plasma and serum -Correct Answer ✔Plasma has clotting
factors . Liquid minus formed elements and contains fibrinogen.
Serum is like plasma does not contain fibrinogen but has all electrolytes,
antibodies, antigens, hormines.
What is found in red bone marrow -Correct Answer ✔Erythrocytes
Leukocytes
Platelets
Characteristics of rbc -Correct Answer ✔Strange disc shake
Oxygen binding
Carries co2 to lungs
Acts as buffers
Lifespan 105 to 120 days
Contains carbonic anhydase
What is carbonic anhydase -Correct Answer ✔Enzyne that combines with co2
form the waste and forms carbonic acid which dissolves easily in blood.
Function of rbc in 02 and co2 transport -Correct Answer ✔A. Carries o2 to cell for
cellular respiration
Bio 253
Bio 253 Exam 3 Study Questions with Verified
Solutions 2025
Functions of blood -Correct Answer ✔Transport it substances
Regulation of temperature
Gas exchange
Regulate ph and other hormones
Protects blood loss through clotting
Blood components -Correct Answer ✔45% formed elements 55% plasma
erythrocytes, leukocytes, platelets, plasma
What do erythrocytes (RBC) do -Correct Answer ✔Hemoglobin (protein) binds to
RBC and carries O2
Leukocytes (wbc) function -Correct Answer ✔Whole cells that protect against
infection and foreign invaders.
Platelets (thrombocytes) function -Correct Answer ✔Clotting and coagulation
Plasma function -Correct Answer ✔Makes up blood volume and carries formed
elements .
components of plasma -Correct Answer ✔albumin, globulin, fibrinogen ( water,
protein other solutions)
Albumin (plasma protein) functions -Correct Answer ✔Maintain osmotic pressure
Bio 253
, Bio 253
Globulins ( antibodies) -Correct Answer ✔Essential for immunity mechanism bind
to a foreign object
Fibrinogen ( plasma protein) -Correct Answer ✔Role in clotting only when
necessary
Difference between plasma and serum -Correct Answer ✔Plasma has clotting
factors . Liquid minus formed elements and contains fibrinogen.
Serum is like plasma does not contain fibrinogen but has all electrolytes,
antibodies, antigens, hormines.
What is found in red bone marrow -Correct Answer ✔Erythrocytes
Leukocytes
Platelets
Characteristics of rbc -Correct Answer ✔Strange disc shake
Oxygen binding
Carries co2 to lungs
Acts as buffers
Lifespan 105 to 120 days
Contains carbonic anhydase
What is carbonic anhydase -Correct Answer ✔Enzyne that combines with co2
form the waste and forms carbonic acid which dissolves easily in blood.
Function of rbc in 02 and co2 transport -Correct Answer ✔A. Carries o2 to cell for
cellular respiration
Bio 253
