If ATP Production in a Human Kidney was Suddenly Halted

Question

If ATP production in a human kidney was suddenly halted, urine production would
A) come to a complete halt.
B) decrease, and the urine would be hypoosmotic compared to plasma.
C) increase, and the urine would be isoosmotic compared to plasma.
D) increase, and the urine would be hyperosmotic compared to plasma.
E) decrease, and the urine would be isoosmotic compared to plasma.

Accepted Answer

Without ATP, active transport processes in the kidney would stop, leading to an inability to reabsorb solutes and water efficiently. This would result in increased urine production that is isoosmotic to plasma, as passive processes would dominate.