Biology, chemistry: the difference between cellulose and lignin
Tutoring biology, you deal with organic molecules. The tutor mentions the difference between lignin and cellulose.
Cellulose and lignin are both found in cell walls.
Cellulose is composed of many glucose units bonded together.
Lignin, on the other hand, consists of phenyl propane units bonded together.
Therefore, cellulose is a polysaccaride, or starch, whereas lignin is aromatic.
Source:
Mader, Sylvia S. Inquiry into Life, 9th ed. Toronto: McGraw-Hill, 2000.
Jack of Oracle Tutoring by Jack and Diane, Campbell River, BC.
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