Respiration in PlantsHard

Question

Druing anaerobic digestion of organic waste, such as in producing bio-gas, Which one of the following is left undegaded ?

Options

A.Cellulose
B.Lipids
C.Lignin
D.Hemi-cellulose

Solution

Druing bio-gas formation, digestion of cellulose is slow (rate-limiting) and most of the lignin is not decomposed. Aftrer cellulose, lignin is the most abundant plant polymer. It forms 20to 30% of the wood of the tree. lignin is a complex polymeric molecule, made up of phenyl propanoid units, Cellulose is a large Chained polymer of glucose molecules which are linked with each other by glycosidic bonds. Hemi-cellulose are branched polymers of glucose, xylose, galactose, mannose and arebinose.

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