Across
- 2. an atom that has gained or lost one or more electrons
- 4. Molecule that forms a double-layered cell membrane; consists of a glycerol, a phosphate group and two fatty acids
- 5. molecule composed of Carbon, Hydrogen, and Oxygen; includes sugars and starches
- 7. a neutral group of atoms that are held together by covalent bonds, not necessarily a compound
- 8. substance that decreases activation energy and increases reaction rate in a chemical reaction
- 9. protein that catalyzes chemical reactions for organisms
- 10. smallest unit of matter
- 12. High-energy molecule that contains, within it's bonds, energy that cells can use
- 15. process by which substances change into different substances through breaking and forming chemical bonds
Down
- 1. Substances made of atoms of different elements that are bonded together in a particular ratio
- 3. An organic compound composed of only carbon and hydrogen
- 5. Double-layer of phospholipds that forms a boundary between a cell and the surrounding environment and controls the passage of materials into and out of the cell
- 6. Substance made of only one type of atom that cannot be broken down by chemical means
- 11. Molecule that makes up proteins; composed of Carbon, Hydrogen, Oxygen, Nitrogen, and sometimes sulfur
- 13. large, carbon-based molecule formed by monomers
- 14. Polymer composed of amino acids like peptide bonds; folds into a particular structure depending on the bonds between amino acids