Asked by Robina Faizizada on Jul 07, 2024
Verified
When Na+ 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.
Actively Transported
Refers to the movement of substances across cell membranes using energy, typically against their concentration gradient.
- Elucidate the cellular and molecular processes that facilitate the movement of substances across segments of the nephron, encompassing both active and passive mechanisms.
Verified Answer
SR
Salma RamirezJul 12, 2024
Final Answer :
C
Explanation :
The active transport of Na+ (presumably a typographical representation of sodium and another substance) from tubular cells to the interstitial fluid establishes a concentration gradient between the tubule lumen and tubule cell, as active transport typically moves substances against their concentration gradient, requiring energy and thus establishing a gradient.
Learning Objectives
- Elucidate the cellular and molecular processes that facilitate the movement of substances across segments of the nephron, encompassing both active and passive mechanisms.
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