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CBSE Class 10 Answered

how life on earth depend on carbon- based molecules?
Asked by | 06 Jun, 2008, 09:04: PM
Expert Answer

Carbon forms the backbone of biology for all life on Earth. Complex molecules are made up of carbon, bonded with other elements, especially oxygen, hydrogen and nitrogen. It is these elements that living organisms need, among others, and carbon is able to bond with all of these because of its four valence electrons.

All the important molecules of living organisms, which help to sustain its life, are carbon based. These include proteins, nucleic acids, carbohydrates, fats and enzymes.

Answered by | 09 Jun, 2008, 05:16: PM
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