Submitted by admin on Mon, 04/28/2014 - 19:23
definition:
An insoluble substance which is the main constituent of plant cell walls and of vegetable fibres such as cotton. It is a polysaccharide consisting of chains of glucose monomers
sentence:
Major constituents of the cell wall are cellulose, hemicelluloses and pectins.
difficulty:
hard
toefl frequency:
2
toefl classification: