When sodium is actively transported from tubular cells to the interstitial fluid,

When sodium is actively transported from tubular cells to the interstitial fluid,


A. no energy is needed.

B. glucose and amino acids are countertransported at the same time.

C. Na+ concentration gradient is established between the tubule lumen and tubule cell.

D. water is countertransported by carrier molecules.

E. water is secreted.


Answer: C. Na+ concentration gradient is established between the tubule lumen and tubule cell.


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Biology Chapter 26

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