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CK-12 Foundation
Ck 12: Life Science: Organic Compounds
[Free Registration/Login may be required to access all resource tools.] The main chemical components of living organisms are known as organic compounds and are built around the element carbon. Living things are made up of very large...
Vision Learning
Visionlearning: Biological Molecules: Fats and Proteins
An explanation of the importance of fats and proteins in the human diet. Examples of chemical structures of various fats and proteins are used.