C-based-BioMolecules

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Across
  1. 2. electrons are found in the electron
  2. 5. many molecules composing living things are formed with this element
  3. 6. the law of conservation of energy says energy ____ be created or destroyed in a chemical reaction
  4. 8. the smallest basic unit of matter
  5. 9. composed of only one type of atom
  6. 10. atoms are composed of protons, neutrons and
  7. 12. an atom can share these to form bonds
Down
  1. 1. this is formed when an atom gains or loses an electron
  2. 2. is a major byproduct of respiration
  3. 3. main function in a cell is to form the cell membrane
  4. 4. are proteins in living organisms that affect reactions by weakening bonds in molecules
  5. 7. carbon has this many valence electrons which give it unique bonding properties
  6. 11. sugars and starches are forms of these