32.
A:
The Na+/K+ ATPase uses energy to pump Na+ outside the cell and K+ inside.
B:
The Na+/K+ ATPase uses energy to pump Na+ inside the cell and K+ outside.
C:
The Na+/K+ ATPase uses energy to bind both Na+ and K+ in turn.
D:
The phosphorylation of the Na+/K+ ATPase does not change its conformation.
The answer is: A