156 LABORATORY GUIDE IN PHYSIOLOGY. 



(16) Fill a dialyzer with a dilute solution of maltose or 

 lactose for subsequent examination. 



(17) Fill a dialyzer with a dilute solution of saccharose 

 for subsequent examination. 



Questions and Problems. 



(a) How may carbohydrates be classified ? [Make three 

 classes.] 



(b) Which class has the lowest grade of hydration? 



(c) How many of this class are soluble in cold water? 



(d) How many are diffusible ? 



(e) Which class has the highest grade of hydration? 



(f) Are all of those which belong to the third class 

 soluble in water? 



(g) Are they all diffusible ? 



(h) How may dextrin be classified ? 



(j) How many of the carbohydrates reduce CuSO 4 in 

 presence of an excess of NaOH or KOH ? 



(k) How many of the carbohydrates are diffusible ? 



(1) How may one determine whether or not cane sugar 

 passed through the animal membrane ? 



