Which of the following is a function of the steep Na+/K+ gradient across the cell membrane?
A. Creates electrochemical gradient
B. Maintains osmotic pressure
C. Provides energy for coupled transport
D. All of the choices are correct.
Answer: D
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The ability of an organism to sense and react to changes in its body illustrates
A. respiration. B. absorption. C. circulation. D. responsiveness.
A couple whose blood types are A (IAi) and B (IBi) may have a child with which of the following blood types?
A) A, B, AB, or O B) AB only C) A or B only D) AB or O only
Leak channels for sodium are closed during the resting potential but open with appropriate stimulation
Indicate whether the statement is true or false
Troponin
A. has two subunits. B. binds to ATP. C. is a long, flexible protein. D. is part of the myosin myofilament. E. has a calcium-binding site.