A sodium-potassium pump within a cell membrane requires energy to move sodium an
ID: 46127 • Letter: A
Question
A sodium-potassium pump within a cell membrane requires energy to move sodium and potassium ions into or out of a cell. The movement of glucose into or out of a cell does not require energy. Which statement best describes the movement of these materials across a cell membrane?
A. Sodium and potassium ions move by active transport, and glucose moves by osmosis.
B. Sodium and potassium ions move by active transport, and glucose moves by facilitated diffusion.
C. Sodium and potassium ions move by facilitated diffusion, and glucose moves by osmosis.
D. Sodium and potassium ions move by facilitated diffusion, and glucose moves by active transport.
Explanation / Answer
?Sodium and potassium ions move by active transport, and glucose moves by osmosis?
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