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Which of the following polysaccharide is not entirely composed of glucose subunits?(a) Lactose(b) Starch(c) Glycogen(d) CelluloseThe question was posed to me in final exam.This is a very interesting question from Chemical Basis of Life topic in chapter Chemical Basis of Life of Cell Biology

Answer»

Correct answer is (a) Lactose

To elaborate: Lactose is a disaccharide molecule found in MILK. Glycogen, starch and cellulose are all polysaccharides composed entirely of GLUCOSE subunits. They have same constitution but different chemical and PHYSICAL PROPERTIES.



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