Which of the following is incorrect about cellulose? (a) It is a ma...

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Which of the following is incorrect about cellulose?
(a) It is a major constituent of cell wall of plant cells.
(b) It is a branched chain disaccharide
(c) It is composed of only \( \beta \)-D-glucose units.
(d) The glycosidic linkage between two units is found between \( \mathrm{C} 1 \) of one unit and \( \mathrm{C} 4 \) of next unit.
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