BME+244+Problem+Set+2+solution

9 na na gating probabilities 08 07 06 05 k 04 k 03 02

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Unformatted text preview: gating probabilities for the Na+ and K+ channels. While the Na gating doe close completely and recovers, the K gate does not. 60 40 Membrane Potential, mV Iappl = 100 µA/cm2 Iappl = 20 µA/cm2 20 0 −20 −40 −60 −80 0 10 20 30 40 Time, ms 50 60 70 0 10 20 30 40 Time, ms 50 60 70 80 1 0.9 Na+ Na+ Gating Probabilities 0.8 0.7 0.6 0.5 K+ 0.4 K+ 0.3 0.2 0.1 0 0 10 20 30 40 Time, ms 50 60 70 0 10 20 30 40 Time, ms 50 60 70 80 Problem 2 a. (3 points) How is the reaction rate affected by 1. a doubling of [E]? The rate is proportional to [E], so a doubling of [E] produces a doubling of the rate. 2. a change in [S] from 0.1Km...
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This document was uploaded on 01/31/2014.

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