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Home Q & A Board Biology-Related Homework Help General Biology
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runner2392 runner2392
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12 years ago
a) concentration gradient for one ion
b) concentration gradient for multiple ions
c) relative ion permeability
d) concentration gradient for one ion and relative ion permeability
e) concentration gradient for multiple ions, and relative ion permeabilities

isn't it just the concentration gradient for one ion b/c of the Nernst equation Ex = (RT/zF)(ln(Xo/Xi)).  multiple ions and permeability aren't accounted for in Nernst..
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wrote...
#1
12 years ago
Quote from: runner2392 (12 years ago)
a) concentration gradient for one ion
b) concentration gradient for multiple ions
c) relative ion permeability
d) concentration gradient for one ion and relative ion permeability
e) concentration gradient for multiple ions, and relative ion permeabilities

isn't it just the concentration gradient for one ion b/c of the Nernst equation Ex = (RT/zF)(ln(Xo/Xi)).  multiple ions and permeability aren't accounted for in Nernst..

(a) and (c) is what I would pick.
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runner2392 Author
wrote...
#2
12 years ago
but the nernst equation doesn't account for permeability...the Goldman-Hodgkins-Kaz equation does
wrote...
#3
Valued Member
12 years ago
Quote from: runner2392 (12 years ago)
but the nernst equation doesn't account for permeability...the Goldman-Hodgkins-Kaz equation does

So, would it just be the first one? (a)
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runner2392 Author
wrote...
#4
12 years ago
yep, that's what i was thinking. the Goldman-Hodgkins-Kaz equation includes permeability in the equation
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