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Quiz 1
Question :
Why is it possible for potassium to diffuse easily into and out of
cells?
Student
Answer:
Potassium has a greater concentration in the ICF.
Sodium has a greater concentration in the ECF.
The resting plasma membrane is more permeable to
potassium.
An excess of anions is inside the cell.
Instructor
Explanation:
Because the resting plasma membrane is more permeable to K+
than to
N
, K+
can easily diffuse from its area of higher concentration in the ICF
to its area of lower concentration in the ECF. Because N
and K
+
are both
cations,
the net
result is
an excess
of anions inside the cell, resulting in theresting membrane potential. The
remaining options do not correctly identify the process that most easily
diffuses K+
.
NSG 5003 2026-2027 update with QUESTIONS AND WITH CORRECT RATIONALE 615pages
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