MDCAT Biology MCQ #938

A person consumes a salad rich in cellulose. This polysaccharide remains undigested in the human gut primarily because of its:

MDCAT Biology MCQ #938

  1. Question 1

    Q1. A person consumes a salad rich in cellulose. This polysaccharide remains undigested in the human gut primarily because of its:

    • A) Alpha-1,4-glycosidic bonds
    • B) Beta-1,4-glycosidic bonds
    • C) Alpha-1,6-glycosidic bonds
    • D) Hydrogen bonds

    Answer: Beta-1,4-glycosidic bonds

    Explanation: Humans lack the enzyme cellulase to break beta-1,4-glycosidic linkages; amylase only breaks alpha-1,4-linkages found in starch.