SFSU BIOL 212 Final Exam And Correct Detailed
Answers.Top Mark Guaranteed.
What is the osmolarity of this 0.9 M solution of CaCl2?
a) 0.3 OsM
b) 0.9 OsM
c) 0.27 OsM
d) 2.7 OsM
e) 3.0 OsM - - ANS✔️--2.7 OsM
Assume that the cell membrane is not permeable to CaCl2 or its ions, what will happen to a RBC
put into this solution?
a) The RBC will swell or lyse
b) The RBC will not change
c) The RBC will crenate - - ANS✔️--The RBC will crenate
GIVEN: The red blood cell membrane is impermeable to mannitol, but is permeable to both
water and glucose. Red blood cells will swell the most when immersed in:
,a) A hyper-osmotic glucose solution
b) a hypo-osmotic glucose solution
c) a hyper-osmotic mannitol solution
d) hypo-osmotic mannitol solution - - ANS✔️--hypo-osmotic mannitol solution
Certain cells that line the stomach synthesizer a digestive enzyme and secrete it into the stomach.
This enzyme is a protein. Which of the following could be responsible for its crenation?
a) endocytosis
b) exocytosis
c) diffusion
d) pinocytosis
e) an aquaporin - - ANS✔️--exocytosis
During the hemoglobin metabolism, the breakdown products of heme become part of:
a) cerebral spinla fluid
b) albumin
c) the globulins
d) erythropoietin
e) bile - - ANS✔️--bile
After the breakdown of RBCs, iron is held in the liver by:
a) ferritin
b) bilirubin
,c) hemoglobin
d) heme transporters
e) transferrin - - ANS✔️--ferritin
The substance HES (hydroxyethyl starch) is a plasma volume expander. In the year 2000, the
International Ski Federation listed HES as a banned substance for international competition.
What is the likely explanation for why a skier in the Olympics might use a plasma expander?
a) Increasing the plasma volume means that there is more space for the blood to carry oxygen
b) Having more plasma means that the heart doesn't have to work as hard
c) If a skier had an abnormally high hematocrit due to blood doping, the hematocrit could be
reduced by taking a plasma volume expander
d) By increasing plasma volume, less lactic acid will be produced in the muscles - - ANS✔️--If a
skier had an abnormally high hematocrit due to blood doping, the hematocrit could be reduced
by taking a plasma volume expander
A molecule that is similar in structure to a ligand, binds to the normal ligand's receptor on a
target cell, a produce similar biological response in the cell a(n):
a) blocker
b) protagonist
c) agonist
d) antagonist - - ANS✔️--agonist
, Typical response to ____________ messengers require a long time to develop because they
necessitate transcription of mRNA and translation of that mRNA into a functional protein
a) lipophilic
b) lipophobic - - ANS✔️--lipophilic
Which of the following statements best describes the function of tyrosine kinase?
a) It catalyzes the formation of cAMP
b) It catalyzes the phosphorylation of a protein in the ECF
c) It actively pumps calcium into the cell
d) It catalyzes the phosphorylation of a protein inside a cell - - ANS✔️--It catalyzes the
phosphorylation of a protein inside a cell
A certain toxin blocks a G-protein coupled receptor whose effector protein is adenylyl cyclase.
Therefore, which of the following would not be produced by the cell?
a) an ion channel
b) cAMP
c) ATP
d) insulin - - ANS✔️--cAMP
If the concentration of chloride ions (Cl-) in the ICF is 10 mM and the concentration in the ECF
is 108 mM, what would be the equilibrium potential for chloride?
a) 63 mV
b) -31 mV
Answers.Top Mark Guaranteed.
What is the osmolarity of this 0.9 M solution of CaCl2?
a) 0.3 OsM
b) 0.9 OsM
c) 0.27 OsM
d) 2.7 OsM
e) 3.0 OsM - - ANS✔️--2.7 OsM
Assume that the cell membrane is not permeable to CaCl2 or its ions, what will happen to a RBC
put into this solution?
a) The RBC will swell or lyse
b) The RBC will not change
c) The RBC will crenate - - ANS✔️--The RBC will crenate
GIVEN: The red blood cell membrane is impermeable to mannitol, but is permeable to both
water and glucose. Red blood cells will swell the most when immersed in:
,a) A hyper-osmotic glucose solution
b) a hypo-osmotic glucose solution
c) a hyper-osmotic mannitol solution
d) hypo-osmotic mannitol solution - - ANS✔️--hypo-osmotic mannitol solution
Certain cells that line the stomach synthesizer a digestive enzyme and secrete it into the stomach.
This enzyme is a protein. Which of the following could be responsible for its crenation?
a) endocytosis
b) exocytosis
c) diffusion
d) pinocytosis
e) an aquaporin - - ANS✔️--exocytosis
During the hemoglobin metabolism, the breakdown products of heme become part of:
a) cerebral spinla fluid
b) albumin
c) the globulins
d) erythropoietin
e) bile - - ANS✔️--bile
After the breakdown of RBCs, iron is held in the liver by:
a) ferritin
b) bilirubin
,c) hemoglobin
d) heme transporters
e) transferrin - - ANS✔️--ferritin
The substance HES (hydroxyethyl starch) is a plasma volume expander. In the year 2000, the
International Ski Federation listed HES as a banned substance for international competition.
What is the likely explanation for why a skier in the Olympics might use a plasma expander?
a) Increasing the plasma volume means that there is more space for the blood to carry oxygen
b) Having more plasma means that the heart doesn't have to work as hard
c) If a skier had an abnormally high hematocrit due to blood doping, the hematocrit could be
reduced by taking a plasma volume expander
d) By increasing plasma volume, less lactic acid will be produced in the muscles - - ANS✔️--If a
skier had an abnormally high hematocrit due to blood doping, the hematocrit could be reduced
by taking a plasma volume expander
A molecule that is similar in structure to a ligand, binds to the normal ligand's receptor on a
target cell, a produce similar biological response in the cell a(n):
a) blocker
b) protagonist
c) agonist
d) antagonist - - ANS✔️--agonist
, Typical response to ____________ messengers require a long time to develop because they
necessitate transcription of mRNA and translation of that mRNA into a functional protein
a) lipophilic
b) lipophobic - - ANS✔️--lipophilic
Which of the following statements best describes the function of tyrosine kinase?
a) It catalyzes the formation of cAMP
b) It catalyzes the phosphorylation of a protein in the ECF
c) It actively pumps calcium into the cell
d) It catalyzes the phosphorylation of a protein inside a cell - - ANS✔️--It catalyzes the
phosphorylation of a protein inside a cell
A certain toxin blocks a G-protein coupled receptor whose effector protein is adenylyl cyclase.
Therefore, which of the following would not be produced by the cell?
a) an ion channel
b) cAMP
c) ATP
d) insulin - - ANS✔️--cAMP
If the concentration of chloride ions (Cl-) in the ICF is 10 mM and the concentration in the ECF
is 108 mM, what would be the equilibrium potential for chloride?
a) 63 mV
b) -31 mV
