Which of the following statements about the sodium-potassium pump is true?
A. It transports 3 sodium ions out of the cell in exchange for 2 potassium ions
B. It transports 2 sodium ions out of the cell in exchange for 3 potassium ions
C. It transports water directly out of the cell
D. It transports hydrogen ions out of the cell
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Which type of epithelial cells will provide the most protection against abrasion, such as your foot rubbing against the bottom of your shoe?
A. Simple squamous
B. Stratified squamous
C. Simple cuboidal
D. Simple columnar
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