d. Much of the experimental research on the propagation of nerve signals has focused on an especially large axon found in the squid. The axon's Nernst potential for K+ ions is -115 mV at a temperature of 15°C. The ion concentration outside the axon is 2.0 mM. What is the concentration inside the axon? 0.02 mm mM
d. Much of the experimental research on the propagation of nerve signals has focused on an especially large axon found in the squid. The axon's Nernst potential for K+ ions is -115 mV at a temperature of 15°C. The ion concentration outside the axon is 2.0 mM. What is the concentration inside the axon? 0.02 mm mM
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:d. Much of the experimental research on the propagation of nerve signals has focused on
an especially large axon found in the squid. The axon's Nernst potential for K+ ions is
-115 mV at a temperature of 15°C. The ion concentration outside the axon is 2.0 mm.
What is the concentration inside the axon?
0.02 mM
ii. 140 mM
iii. 200 mM
iv. 8000 mM
Explanation:
Expert Solution

Step 1
Nernst potential (V) can be calculated using following equation
V = RT/zF ln (Xout/Xin)
where V is equilibrium electrical potential difference
R is Gas constant
T is temperature (K)
z is ion charge
F is Faradays constant
Xout is ion concentration outside
Xin is ion concentration inside
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