AP EAMCET2016ChemistryBiomolecules
Observe the following statements. I. Sucrose has glycosidic linkage. II. Cellulose is present in both plants and animals. III. Lactose contains D-galactose and D-glucose units. Which of the following statements are correct?
Options
- A(I), (II) and (III)
- B(I) and (II)
- C(I) and (II)
- D(I) and (III)
Correct answer
D. (I) and (III)
Step-by-step solution
Let's evaluate each statement to determine which are correct. - Statement I: Sucrose has a glycosidic linkage. This is correct. Sucrose is a disaccharide formed by a glycosidic linkage between a glucose unit and a fructose unit. - Statement II: Cellulose is present in both plants and animals. This is incorrect. Cellulose is the main structural component of the primary cell wall of green plants, but it's not present in animals. Animals lack the enzyme cellulase to break down cellulose. - Statement III: Lactose conta