Matter and Energy in Organisms: Part 1

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Across
  1. 3. Refers to chemical reactions occurring in cells in which carbon atoms from organic molecules (e.g. glucose) are oxidized to release energy.
  2. 4. Group of organic molecules composed of hydrogen, oxygen, nitrogen, carbon and phosphorus; examples include DNA, RNA and ATP.
  3. 7. A simple molecular unit that may may react chemically with another molecule of the same type to form a larger molecule (e.g., amino acid, nucleotide).
  4. 10. Important in creating polymers, this reaction typically produces water when two molecules forming a bond to create a larger molecule.
  5. 12. Attraction between the nuclei of two nonmetallic atoms and at least two shared electrons.
  6. 16. Chemical reaction associated with burning that involves the oxidation of carbon atoms from a hydrocarbon fuel to release energy.
  7. 17. A substance that cannot be decomposed into simpler substances by chemical means; it is made up of atoms that all share an identical number of protons.
  8. 18. Proteins are long, folded chains that are composed of these monomers.
Down
  1. 1. The production of complex molecules within living organisms or cells (e.g. photosynthesis).
  2. 2. Process (chemical reaction) that involves the breaking of chemical bonds by the addition of water.
  3. 5. Neutral group of two or more atoms held together by chemical bonds.
  4. 6. Chemical substances formed as a result of a chemical reaction.
  5. 8. Group of organic molecules that are composed of carbon, hydrogen and oxygen and include sugars (e.g. glucose), starch, and cellulose.
  6. 9. Group of fatty or waxy organic molecules made mostly from carbon and hydrogen atom; they include oils, cholesterol and triglycerides.
  7. 11. A compound made up of several repeating units.
  8. 13. Substance taking part in a chemical reaction
  9. 14. Group of organic molecules that contain carbon, hydrogen, oxygen and nitrogen; examples include insulin and hemoglobin.
  10. 15. Term that is used to describe any substance containing carbon-based compounds, especially those produced by or derived from living organisms.