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You now wish to more fully characterize the engineered cells themselves. You wish to examine individual...

You now wish to more fully characterize the engineered cells themselves. You wish to examine individual magnesium ion (Mg2+) channels on the surface of the cell membrane. Assume for now that only magnesium ion channels exist on these engineered cells, and only these channels account for ionic current flowing through the cell membrane.

Multiple choice question: Assume the current measured through a single magnesium ion channel is 1 pA (10-12 A).

How many magnesium ions per second does this represent? Recall 1 Coulomb = 6.25 X 1018 electrons.

How many magnesium ions per second flow through a single magnesium ion channel?

a. 3.125*106 Mg2+ ions / second

b. 6.25*106 Mg2+ ions / second

c. 3.125*107 Mg2+ ions / second

d. 6.25*1012 Mg2+ ions / second

e. None of the above

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