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• Monosaccharides are often used as building blocks of large molecules.
• Ribose and deoxyribose are components of nucleic acid. • Glucose is component of large energy storage molecules.
Animal cells store glucose in form ofglycogen, which is more extensivelybranched and contains longer chainsthan amylose and amylopectin.
Cellulose fibre from a pine tree(20X magnification).
Cellulose fibre can be very strong and are quite resistant to metabolic breakdown, which is one reason why wood is such a good building materials.