Which of the following solutions is not isotonic to human cells? A) 150 mM NaCl B) 300 mM urea C) 100 mM MgCl₂ D) 300 mOsm NaCl

Question

Quizplus · Accepted Answer

Urea cannot dissolve in cell membranes and disrupts the membrane's structure. Therefore, a solution containing 300 mM urea would not be isotonic to human cells. The other solutions listed all have concentrations similar to the concentration inside human cells and would be considered isotonic.

Which of the Following Solutions Is Not Isotonic to Human