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Published on 11 Dec 2014 | about 1 year ago

Watch the next lesson: www.khanacademy.org/science/biology/macromolecules/nucleic-acids/v/molecular-structure-of-dna

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Biology on Khan Academy: Life is beautiful! From atoms to cells, from genes to proteins, from populations to ecosystems, biology is the study of the fascinating and intricate systems that make life possible. Dive in to learn more about the many branches of biology and why they are exciting and important. Covers topics seen in a high school or first-year college biology course.

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