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Biology 5 Online
OpenStudy (anonymous):

Most animal cell membranes have proteins that pump ______ ions out of the cell and potassium ions into the cell. A) calcium B) carbon C) magnesium D) sodium

OpenStudy (anonymous):

I believe it's sodium, but I'm not 100% on this.

OpenStudy (anonymous):

Yes it is sodium! I am 100% percent sure since its called a sodium-pottasium pump!

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