the biochemistry that takes place inside cells depends on various chemical ions,

Question

the biochemistry that takes place inside cells depends on various chemical ions, such as Na+, K+ and Ca+. These ions enter cells though narrow pores in the cell membrane known as ion channels which are formed from specialized protein molecules that are selective for one type of ion. Measurements with microelectodes have shown that a 0.30- nm- diameter K+ channel carries a current of 1.8 pA. What is the direction of current K+ ions enter the cell.

a.) the current is into the cell

b.) the current is out of the cell

c.) no current flows into or out of the cell

d.) it is impossible to tell

Explanation / Answer

c.) no current flows into or out of the cell

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