Patch clamp recording of a single ion channel yields the following results: Holding Potential (mV) Measured Current (pA) -100 -1.0 -50 0.0 0 +1.0 +50 +2.0 +100 +3.0 Part a. What is the equilibrium potential for ion X+1? a.) 0 mv b.)+55 mv c.)-50 mv d.) -60 mv e.) -75 mv Part b. Is ion X+1 in higher concentration inside or outside the cell? a.) inside b.) outside Part c. Calculate the membrane potential at the instant when a neuron has the following relative permeabilities: PK+ = 1.0, PNa+ = 1.0, PCl- = 1.0. Use the ionic concentration values in the picture included. a.) -12 mv b.) -35mv c.) -60 mv d.) +20 mv e.) 0 mv
Patch clamp recording of a single ion channel yields the following results: Holding Potential (mV) Measured Current (pA) -100 -1.0 -50 0.0 0 +1.0 +50 +2.0 +100 +3.0 Part a. What is the equilibrium potential for ion X+1? a.) 0 mv b.)+55 mv c.)-50 mv d.) -60 mv e.) -75 mv Part b. Is ion X+1 in higher concentration inside or outside the cell? a.) inside b.) outside Part c. Calculate the membrane potential at the instant when a neuron has the following relative permeabilities: PK+ = 1.0, PNa+ = 1.0, PCl- = 1.0. Use the ionic concentration values in the picture included. a.) -12 mv b.) -35mv c.) -60 mv d.) +20 mv e.) 0 mv
Chapter4: Management Practices For Finfish
Section: Chapter Questions
Problem 23SA
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Question
Patch clamp recording of a single ion channel yields the following results:
Holding Potential (mV) |
Measured Current (pA) |
-100 |
-1.0 |
-50 |
0.0 |
0 |
+1.0 |
+50 |
+2.0 |
+100 |
+3.0 |
Part a.
What is the equilibrium potential for ion X+1?
a.) 0 mv
b.)+55 mv
c.)-50 mv
d.) -60 mv
e.) -75 mv
Part b.
Is ion X+1 in higher concentration inside or outside the cell?
a.) inside
b.) outside
Part c.
Calculate the membrane potential at the instant when a neuron has the following relative permeabilities: PK+ = 1.0, PNa+ = 1.0, PCl- = 1.0. Use the ionic concentration values in the picture included.
a.) -12 mv
b.) -35mv
c.) -60 mv
d.) +20 mv
e.) 0 mv
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