Class 11 · Biomolecules

Functions of Biomolecules — NEET Biology

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Nucleic acids serve as genetic material. Polysaccharides are components of cell wall in plants, fungi and also of the exoskeleton of arthropods. They also are storage forms of energy (e.g., starch and glycogen). Proteins serve a variety of cellular functions. Many of them are enzymes, some are antibodies, some are receptors, some are hormones and some others are structural proteins. Collagen is the most abundant protein in animal world and Ribulose bisphosphate Carboxylase-Oxygenase (RuBisCO) is the most abundant protein in the whole of biosphere.

NCERT Biology · Class 11 · Chapter 9 · Paragraph 69
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Which of the following statements are correct about biomacromolecules and related concepts? S1: Proteins are homopolymers made of only one type of monomer repeating ‘n’ number of times. S2: Collagen is the most abundant protein in the animal world, while RuBisCO is the most abundant protein in the whole of the biosphere. S3: Polysaccharides like cellulose are homopolymers of glucose, whereas starch is a heteropolymer with different monosaccharides. S4: The right end of a polysaccharide chain is called the reducing end, and the left end is called the non-reducing end. S5: Nucleic acids are polynucleotides where the building block, a nucleotide, consists of a heterocyclic compound, a monosaccharide, and a phosphate group. S6: Lipids are considered true macromolecules due to their high molecular weight, similar to proteins and nucleic acids.

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