The diffusion of water across a tubule is driven by differences in________across the membrane.
A) active transport
B) potassium concentration
C) osmolarity
D) volume
E) partial pressure

Question

Quizplus · Accepted Answer

The diffusion of water across a tubule (or any semipermeable membrane) is driven by differences in osmolarity across the membrane. Osmolarity refers to the total concentration of solute particles in a solution, and water moves from areas of lower osmolarity to areas of higher osmolarity to achieve equilibrium.

The Diffusion of Water Across a Tubule Is Driven by Differences