Studies of cricket Malpighian tubules revealed that potassium ions move against the concentration gradient and accumulate inside the tubule. Which statement best predicts the effect of the potassium concentration gradient on the movement of water in the Malpighian tubules?

Question

Quizplus · Accepted Answer

The accumulation of potassium ions inside the Malpighian tubules creates a higher solute concentration inside the tubules compared to the surrounding tissues. This osmotic gradient will cause water to move into the lumen of the tubules to balance the solute concentration, leading to a net movement of water into the lumen.

Studies of Cricket Malpighian Tubules Revealed That Potassium Ions Move