Question

Extracellular fluid in adults differs from intracellular fluid in that its 

A. Volume is greater.

B. Tonicity is lower. 

C. Anions are mainly inorganic. 

D. Sodium:potassium molar ratio is higher.

E. pH is lower.

Answer 1

A. False Cells contain half to two-thirds of the total body fluid. 

B. False It is the same; if it were lower, osmosis would draw water into the cells. 

C. True Mainly Cl^- and HCO₃^- ; inside, the main anions are protein and organic phosphates. 

D. True Around 30:1; the intracellular ratio is about 1:10. 

E. False Intracellular pH is lower due to cellular metabolism.