Khan Academy provides an overview of nucleic acids, including their structure and function in genetic information.

Learn about the structure and function of DNA, including its role in inheritance and genetic information storage.

Learn about the structure and function of nucleic acids and nucleotides in this introductory video.

Introduction to lipids, their molecular structure, types, and functions.

This article introduces biological macromolecules, explaining their structure and function in living organisms.

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Transcription is the process of copying a segment of DNA into RNA.

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The phosphorus cycle article on Khan Academy explains the process of phosphorus cycling through ecosystems, including its sources, sinks, and environmental impact.

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