Multiple Choice
Secondary active transport across a membrane refers to
A) Movement of a molecule across a membrane and against its concentration gradient powered by an ion gradient that is created by a different transporter
B) Movement of a molecule across a membrane and against its concentration gradient through a transporter that is directly powered by ATP hydrolysis
C) Movement of a molecule across a membrane powered by its own concentration gradient
D) Movement of a molecule across a membrane through a transporter that has an alpha-helical secondary structure.
E) none of the above
Correct Answer:

Verified
Correct Answer:
Verified
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