In Secondary Active Transport, When Both the Driving Ion and the Transport

question 59

Multiple Choice

In secondary active transport, when both the driving ion and the transport ion are in high concentration outside of the cell, in which direction will the two ions move?

• A) As the driving ion moves in, the transport ion moves in.
• B) As the driving ion moves in, the transport ion moves out.
• C) As the driving ion moves out, the transport ion moves in.
• D) As the driving ion moves out, the transport ion moves out.
• E) As long as both ions are moving together, they can go either in or out.

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