The document lists and describes the major organelles found in eukaryotic cells including the nucleus, mitochondria, chloroplasts, cell membrane, and cell wall. It then provides more detail on the cell membrane, describing its lipid bilayer structure and various membrane-associated proteins that serve functions like cell surface receptors, enzymes, and transporters. Next, it defines organic molecules as chemicals containing carbon and hydrogen while macromolecules are large organic molecules composed of building blocks like glucose or amino acids. Finally, it defines inorganic molecules as any molecule not containing carbon that are not of biological origin, providing examples like ammonia, carbon dioxide, and sulphuric acid.