Maharashtra BoardEnglish MediumSTD 10ScienceP-1 Carbon Compounds5 Marks
Question
What are macromolecules? Explain Natural and manmade macromolecule.
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Answer
The number of the known carbon compounds is as large as about $10 \ million$ and the range of their molecular masses is as large as $10^1-10^{12}$ The giant carbon molecules formed from hundreds or thousands of atoms are called macromolecules.
$(i)$ Natural macromolecules: macromolecule namely The natural polysaccharides, proteins and nucleic acids are the supporting pillars of the living world. We get food, clothing and shelter from polysaccharides; namely starch and cellulose. Proteins constitute a large part of the bodies of animals and also are responsible for their movement and various physiological processes. Nucleic acid control the heredity at molecular level. Rubber is another type of natural macromolecule.
$(ii)$ Man-made macromolecule: Today manmade macromolecule are in use in every walk of life. Manmade fibres which have strength along the length similar to natural fibres cotton, wool and silk; elastomers which have the elastic property of rubber, plastics from which innumerable types of articles sheet, pipes are made. All these are examples of manmade macromolecules.
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