Biology/Embryology

An ion pump:
A. requires hydrolysis of ATP to move ions
B. does not require energy to move ions
C. exchanges ions with the same charge
D. exchanges ions with opposite charge
E. A and C

An ion channel:
A. requires hydrolysis of ATP to move ions
B. does not require energy to move ions
C. exchanges ions with the same charge
D. exchanges ions with opposite charge
E. A and C

I know a pump exchanges ions and I'm pretty sure that they exchange the same charge. This is in concerns with a H+ and a Na+ biological pump; but I'm not sure if it requires ATP. I don't know if a ion channel is like that of a ion pump or not at all alike.
Thank you for you help,
Aletha

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