Bio 264 Exam 2| 2025 LATEST UPDATED| COMPLETE
QUESTIONS AND ANSWERS | 100% RATED CORRECT | 100%
VERFIED | ALREADY GRADED A+|GET A+
Which ion has greatest influence on resting membrane potential? -
(answer)Potassium (potassium has more leak channels on the membrane than
sodium, which is why potassium has a higher permeability value and has more
impact of resting membrane potential)
Concerning resting membrane potential, the inside of the membrane is _______
compared to the ________ charged outside. - (answer)negative, positively.
T or F:
The diffusion of K+ and Na+ down their chemical gradients contributes to the
resting membrane potential - (answer)F
At resting membrane potential, ______________________. - (answer)extracellular
sodium levels are high
,During the hyper polarization phase... - (answer)K+ leaves the cell
Which is not a characteristic of a graded potential?
A) Spreads in a decremental fashion
B)Can result from changes in voltage across the membrane
C) Can summate
D) Size is inversely proportional to stimulus strength - (answer)D
As the stimulus strength and size of the graded potential _____________ the action
potential frequency ___________. - (answer)increases; increases
The outside of a cell during resting membrane potential is _________ in relation to
the inside of the cell. - (answer)Positively charged
, If at resting membrane potential (RMP), the plasma membrane became more
permeable to K+, the cell would _________________________. -
(answer)hyperpolarize
Which ion has greatest influence on resting membrane potential? - (answer)K+
Which statement is true?
A) ATP is required to move Na+ extracellularly
B)Ca+ binding to specific ion channels stops the intracellular diffusion of Na+
C) Na+ relies on a specific type of ion channel for diffusion
D) All are true
E) Two are true
F) None are true - (answer)D
If extracellular concentration of K+ increases, what will the effect be on the resting
membrane potential? - (answer)The increase in extracellular K+ concentration will
decrease the normal K+ gradient; because of this K+ has less of a tendency to
QUESTIONS AND ANSWERS | 100% RATED CORRECT | 100%
VERFIED | ALREADY GRADED A+|GET A+
Which ion has greatest influence on resting membrane potential? -
(answer)Potassium (potassium has more leak channels on the membrane than
sodium, which is why potassium has a higher permeability value and has more
impact of resting membrane potential)
Concerning resting membrane potential, the inside of the membrane is _______
compared to the ________ charged outside. - (answer)negative, positively.
T or F:
The diffusion of K+ and Na+ down their chemical gradients contributes to the
resting membrane potential - (answer)F
At resting membrane potential, ______________________. - (answer)extracellular
sodium levels are high
,During the hyper polarization phase... - (answer)K+ leaves the cell
Which is not a characteristic of a graded potential?
A) Spreads in a decremental fashion
B)Can result from changes in voltage across the membrane
C) Can summate
D) Size is inversely proportional to stimulus strength - (answer)D
As the stimulus strength and size of the graded potential _____________ the action
potential frequency ___________. - (answer)increases; increases
The outside of a cell during resting membrane potential is _________ in relation to
the inside of the cell. - (answer)Positively charged
, If at resting membrane potential (RMP), the plasma membrane became more
permeable to K+, the cell would _________________________. -
(answer)hyperpolarize
Which ion has greatest influence on resting membrane potential? - (answer)K+
Which statement is true?
A) ATP is required to move Na+ extracellularly
B)Ca+ binding to specific ion channels stops the intracellular diffusion of Na+
C) Na+ relies on a specific type of ion channel for diffusion
D) All are true
E) Two are true
F) None are true - (answer)D
If extracellular concentration of K+ increases, what will the effect be on the resting
membrane potential? - (answer)The increase in extracellular K+ concentration will
decrease the normal K+ gradient; because of this K+ has less of a tendency to
