SFSU BIOL 212 Final Exam 2026 | All Questions
and Correct Answers (Graded A+) | Verified
Answers | Brand New Version!
Which of the following is FALSE about glucose uptake in the small intestine?
a) glucose moves into the bloodstream by facilitated diffusion
b) the movement of glucose across the luminal membrane is driven by an ion
concentration gradient
c) the co-transport carrier relies on phosphorylation in order to increase its
affinity for glucose
d) the sodium-potassium pump keeps the ICF Na+ concentration lower than the
luminal Na+ concentration ---------CORRECT ANSWER-----------------the co-transport
carrier relies on phosphorylation in order to increase its affinity for glucose
A solution contains solutes to which the membrane is not permeable. If pure
water and the solution are separated by a membrane:
a) water will diffuse by osmosis until the solute concentration in the two
compartments becomes equal
b) both water and solute will diffuse across the membrane, down their
concentration gradients, until a state of equilibrium is established
c) water will diffuse by osmosis until stopped by an opposing hydrostatic pressure
d) because of hydrostatic pressure from the pure water, no water will move at all
e) it is impossible to predict what will happen ---------CORRECT ANSWER--------------
---water will diffuse by osmosis until stopped by an opposing hydrostatic pressure
,By definition, a solution is hypotonic to a human cell if:
a) the concentration of all solutes contained in it is less than 300 mOsm
b) the concentration of all membrane-permeant solutes contained in it is less
than 300 mOsm
c) the concentration of all membrane-impermeant solutes contained in it is less
than 300 mOsm
d) its osmolarity is less than 300 mOsm ---------CORRECT ANSWER-----------------the
concentration of all membrane-impermeant solutes contained in it is less than
300 mOsm
The atomic mass of calcium (Ca) is 40.0 and chloride (Cl) is 35.5. A young doctor
needs to treat a patient with hypocalcemia (low blood calcium). The doctor gives
the patient 0.9 M CaCl2. What approximate % solution is this?
a) 0.1%
b) 6.8%
c) 10%
d) 0.7%
e) 0.9% ---------CORRECT ANSWER-----------------10%
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 ---------CORRECT ANSWER-----------------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 ---------CORRECT ANSWER-----------------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 ---------CORRECT ANSWER-----------------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 ---------CORRECT ANSWER-----------------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 ---------CORRECT ANSWER-----------------bile
After the breakdown of RBCs, iron is held in the liver by:
a) ferritin
b) bilirubin
c) hemoglobin
d) heme transporters
e) transferrin ---------CORRECT ANSWER-----------------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?
and Correct Answers (Graded A+) | Verified
Answers | Brand New Version!
Which of the following is FALSE about glucose uptake in the small intestine?
a) glucose moves into the bloodstream by facilitated diffusion
b) the movement of glucose across the luminal membrane is driven by an ion
concentration gradient
c) the co-transport carrier relies on phosphorylation in order to increase its
affinity for glucose
d) the sodium-potassium pump keeps the ICF Na+ concentration lower than the
luminal Na+ concentration ---------CORRECT ANSWER-----------------the co-transport
carrier relies on phosphorylation in order to increase its affinity for glucose
A solution contains solutes to which the membrane is not permeable. If pure
water and the solution are separated by a membrane:
a) water will diffuse by osmosis until the solute concentration in the two
compartments becomes equal
b) both water and solute will diffuse across the membrane, down their
concentration gradients, until a state of equilibrium is established
c) water will diffuse by osmosis until stopped by an opposing hydrostatic pressure
d) because of hydrostatic pressure from the pure water, no water will move at all
e) it is impossible to predict what will happen ---------CORRECT ANSWER--------------
---water will diffuse by osmosis until stopped by an opposing hydrostatic pressure
,By definition, a solution is hypotonic to a human cell if:
a) the concentration of all solutes contained in it is less than 300 mOsm
b) the concentration of all membrane-permeant solutes contained in it is less
than 300 mOsm
c) the concentration of all membrane-impermeant solutes contained in it is less
than 300 mOsm
d) its osmolarity is less than 300 mOsm ---------CORRECT ANSWER-----------------the
concentration of all membrane-impermeant solutes contained in it is less than
300 mOsm
The atomic mass of calcium (Ca) is 40.0 and chloride (Cl) is 35.5. A young doctor
needs to treat a patient with hypocalcemia (low blood calcium). The doctor gives
the patient 0.9 M CaCl2. What approximate % solution is this?
a) 0.1%
b) 6.8%
c) 10%
d) 0.7%
e) 0.9% ---------CORRECT ANSWER-----------------10%
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 ---------CORRECT ANSWER-----------------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 ---------CORRECT ANSWER-----------------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 ---------CORRECT ANSWER-----------------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 ---------CORRECT ANSWER-----------------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 ---------CORRECT ANSWER-----------------bile
After the breakdown of RBCs, iron is held in the liver by:
a) ferritin
b) bilirubin
c) hemoglobin
d) heme transporters
e) transferrin ---------CORRECT ANSWER-----------------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?
