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0:54
YouTube
Nicholas Pulliam, PhD
The 4 Biological Macromolecules Explained
All life — from bacteria to humans — is built from four classes of molecules: Carbohydrates: sugars for energy and structure. Proteins: amino acid chains that perform most cellular work. Lipids: fats that store energy and form membranes. Nucleic Acids: DNA and RNA, which store genetic information. Together, they form the chemical foundation ...
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