fluctuations of exchange rate of U.S. and china that account for a large proportion of exports in the export-dependent Korean economy cause Korean company’s sales decreasing and trade frictions in the international trade of Korea. What is worse is that exchange rate frictions occur all around the world as well as between U.S. and China. And also protectionism of exchange rate is current global
fluctuation of the exchange rate depending on supply and demand of markets
• Limited flexible exchange rate system: A system that is in a middle of fixed and flexible. It limited the range of exchange rate fluctuation about certain currency within certain range(1~2.25%).
2. 2. Since the flexible exchange rate system was adopted as a new international monetary system in IMF conference
Contents
Ion channels ion-selective and fluctuate between open and closed states
The membrane potential in animal cells depends mainly on K⁺ leak channels and the K⁺ gradient across the plasma membrane
The resting potential decays only slowly when the Na⁺- K⁺ pump is stopped
The three-dimensional structure of a bacterial K⁺ channel shows how an ion channel can wo
Channel protein
; hydrophilic pore
Ion channel - highly selective pore
open and close
passive transport-diffuse
Nerve cell - Ion channel 이용
Ion channels ion-selective and fluctuate between open and closed states
Ion channel 의 Property
-ion selectivity
-open and close(gate)
Specific stimulus에 의해 open