Given below are four statements regarding biopolymers: A. Cellulose is a straight-chain polymer of -D-glucose. B. Amylopectin is a water-soluble, unbranched polymer of -D-glucose. C. In nucleic acids, nucleotides are joined by phosphodiester linkages. D. The primary structure of proteins consists of -amino acids linked by glycosidic bonds. Choose the most appropriate answer from the options given below:

Step-by-step solution

Statement A is correct. Cellulose is a straight chain polysaccharide composed only of -D-glucose units which are joined by glycosidic linkages between C₁ of one glucose unit and C₄ of the next glucose unit. Statement B is incorrect. Amylopectin is insoluble in water and constitutes about 80-85% of starch. It is a branched chain polymer of -D-glucose units. Statement C is correct. Nucleic acids are long chain polymers of nucleotides, which are linked by phosphodiester linkages. Statement D is incorrect. The primary