Solute and Water

Urea

NaCl

Glucose

Solution X.

100mM

50mM

20mM

Solution Y.

100mM

100mM

50mM

1. What is the tonicity of X relative to a cell of 300mOsM?

A. X is hypotonic  to the cell

B. X is isotonic  to the cell

C. X is hypertonic  to the cell

2. Which solution has the most water?

A. Solution X

B. Solution Y

                    

3. If a cell is 100mOsM, then it will swell in which of the following solutions?

A. 100 mOsM

B. 50 mOsM

C. 200 mOsM

4. Jane drank 1 bowl of isotonic tomato soup. How would the water

from the soup distribute between the ICF and ECF compartments?

A. All remains in the ECF

B. 2/3 in ECF and 1/3 in ICF

C. 1/3 in ECF and 2/3 in ICF

D. 1/2 in ECF and 1/2 in ICF

Answer 1: A. X is hypotonic  to the cell

Answer 2: A. Solution X

Solution X is 220 mOsM. It has more water than solution Y which is 350mOsM.

Answer 3: B. 50 mOsM

Answer 4: A. All remains in the ECF