The Molecules of Life (Biomolecules) 1. Organic compounds contain at least one ___Carbon___atom. (which element?) 2. A carbon atom can form __four___covalent bonds (how many?) 3. Hydrocarbons are only composed of __hydrogen__ and __carbon___ atoms. (which elements?) 4. _Functional groups__ determine the properties of organic compounds. 5. The four main classes of biological molecules are _carbohydrates_, __lipids_, _proteins__, and ____________________. 6. In biomolecular synthesis, __________________ are joined into chains called ______________and in the process, a molecule of ______________ is removed by a ___________________ reaction. 7. In biomolecular reduction, ________________are broken down into ________________ and in the process, a molecule of ______________ is added by a _______________reaction. 8. _________________________are the simplest carbohydrates, and have a molecular formula that is a multiple of the molecule _____________. 9. ________________ and __________________ are polysaccharides found in plants. 10. ____________ are hydrophobic energy-storage molecules. 11. Wax, used to waterproof, is a type of _______________. 12. ________________molecules are essential to the structures and activities of life. 13. There are _____different amino acid monomers. 14. A protein’s specific ________ determines its function 15. Hemoglobin is an example of a ____________ with a ______________structure. 16. ___________ __________ are information rich polymers of nucleotides that code for proteins and come in two types, __________ and ___________. 17. A nucleotide consists of three things: _____________, ______________ and a _________________.