Cell walls are used by many different organisms for protection from their environment and structural support. These cell walls must obviously be insoluble in water, otherwise, they would dissolve the first time the organism got wet. Which of the following carbohydrates would you expect to be the most soluble in water?
A) cellulose
B) starch
C) peptidoglycan
D) chitin

Question

Quizplus · Accepted Answer

Starch is a polysaccharide made up of glucose monomers and is highly soluble in water. Cellulose, peptidoglycan, and chitin are also polysaccharides but have a more rigid structure and are hence insoluble in water.

Cell Walls Are Used by Many Different Organisms for Protection