Based solely upon its electrical charge the inside of

10) Based solely upon its electrical charge, the inside of a typical cell will tend to attract
extracellular ________ to move inward.
A) proteins
B) anions
C) cations
D) uncharged ions
E) ions whose concentration gradient allows them
Answer: C
Diff: 4 Page Ref: 98
11) Which of the following factors does NOT directly affect the direction or magnitude of the
electrical driving force?
D
Diff: 6 Page Ref: 99
12) Which of the following is NOT a determinant of the magnitude and direction of the
equilibrium potential for an ion?
A
Diff: 5 Page Ref: 99
3

13) If a positively charged ion is more concentrated outside the cell, the forces required to
balance the chemical gradient would be directed ________. Thus, the equilibrium potential for
this ion would be ________ charged.
B
Diff: 7 Page Ref: 99
14) Which of the following cells would have a greater electrical attraction for sodium ions to
enter the cell?
A) cell with membrane potential = -70 mV
B) cell with membrane potential = -90 mV
C) cell with membrane potential = -50 mV
D) cell with membrane potential = 0 mV
E) cell with membrane potential = +20 mV
Answer: B
Diff: 4 Page Ref: 98
15) If a negatively charged ion is more concentrated outside the cell, the forces required to
balance the chemical gradient would be directed ________. Thus, the equilibrium potential for
this ion would be ________ charged.
A
Diff: 7 Page Ref: 99
16) If a negatively charged ion is more concentrated inside the cell, the forces required to balance
the chemical gradient would be directed ________. Thus, the equilibrium potential for this ion
would be ________ charged.
C
Diff: 7 Page Ref: 99
4

17) If a positively charged ion is more concentrated inside the cell, the forces required to balance
the chemical gradient would be directed ________. Thus, the equilibrium potential for this ion
would be ________ charged.
D
Diff: 7 Page Ref: 99