Page 1 of 63
SFSU BIOL 212 Final Exam NEWEST VERSION ALL 200
QUESTIONS AND CORRECT ANSWERS WITH LATEST
UPDATE JUST RELEASED THIS YEAR
Question: Which of the following statements about the Na+/K+ pump is FALSE?
a) three sodium ions are moved out of the cell per ATP
b) It is a form of active transport
c) the pump is open to both the ECF and ICF simultaneously, to allow both Na+ and K+ to move
in their respective directions
d) the pump has built in enzyme activity
e) it is present in the cell membrane of every cell of the human body - CORRECT
ANSWER✔✔the pump is open to both the ECF and ICF simultaneously, to allow both Na+ and
K+ to move in their respective directions
Question: The primary cation outside the cells is
a) sodium
b) chloride
, Page 2 of 63
c) potassium
d) calcium
e) magnesium - CORRECT ANSWER✔✔sodium
Question: 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
Question: 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
, Page 3 of 63
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
Question: 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
Question: 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?
, Page 4 of 63
a) 0.1%
b) 6.8%
c) 10%
d) 0.7%
e) 0.9% - CORRECT ANSWER✔✔10%
Question: 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
q:Homeostasis refers to maintaining a relatively stable internal environment. The "internal
environment" is:
SFSU BIOL 212 Final Exam NEWEST VERSION ALL 200
QUESTIONS AND CORRECT ANSWERS WITH LATEST
UPDATE JUST RELEASED THIS YEAR
Question: Which of the following statements about the Na+/K+ pump is FALSE?
a) three sodium ions are moved out of the cell per ATP
b) It is a form of active transport
c) the pump is open to both the ECF and ICF simultaneously, to allow both Na+ and K+ to move
in their respective directions
d) the pump has built in enzyme activity
e) it is present in the cell membrane of every cell of the human body - CORRECT
ANSWER✔✔the pump is open to both the ECF and ICF simultaneously, to allow both Na+ and
K+ to move in their respective directions
Question: The primary cation outside the cells is
a) sodium
b) chloride
, Page 2 of 63
c) potassium
d) calcium
e) magnesium - CORRECT ANSWER✔✔sodium
Question: 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
Question: 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
, Page 3 of 63
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
Question: 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
Question: 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?
, Page 4 of 63
a) 0.1%
b) 6.8%
c) 10%
d) 0.7%
e) 0.9% - CORRECT ANSWER✔✔10%
Question: 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
q:Homeostasis refers to maintaining a relatively stable internal environment. The "internal
environment" is:
