MCAT Question A Day - 4/30/14

Like cellulose, chitin is a polysaccharide that cannot be digested by animals. Chitin differs from cellulose by possessing an acetyl-amino group at the second carbon. What molecule is a reactant in the breaking of the beta-1,4-glycoside linkages of cellulose and chitin?

A. water

B. oxygen

C. alpha-l,4-glucosidase

D. beta-1,4-glucosidase

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