Which of the following events occurs in the secondary active transport of glucose?
A. Glucose is moved against its concentration gradient into the cell.
B. The Na+-K+ pump maintains a Na+ concentration gradient across the plasma membrane.
C. Na+ ions and glucose are cotransported by the same carrier molecule.
D. Energy comes from diffusion of Na+ down their concentration gradient.
E. All of the choices are correct.
Answer: E
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