Below you can find the Mr. potato head could tell you the 3 best- known polysaccharides are cellulose glycogen & this Jeopardy Words Answer. The answer to Mr. potato head could tell you the 3 best- known polysaccharides are cellulose glycogen & this has 6 letters. This clue belongs to the Chemistry category and is part of Jeopardy Word Level 223. If you scroll near the bottom you will find other clues and answers part of level 223