Unit 2 Biochemistry Vocab

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Across
  1. 2. a substance that decreases the activation energy needed to start a chemical reaction, therefore increases the rate of the chemical reaction
  2. 4. a large molecule made of many monomers bonded together
  3. 5. nonpolar molecules that include fats, oils, wax, and cholesterol
  4. 7. changes substances into different substances by breaking and forming bonds
  5. 9. substances changed during a chemical reaction
  6. 10. measurement of acidity
  7. 11. attraction among molecules of a substance
  8. 14. a subunit in a complete molecule
  9. 16. reaction absorbs more energy than it releases
  10. 18. molecules composed of C, H, and O, energy source (sugar & starches)
  11. 19. the amount of energy that needs to be absorbed for a chemical reaction to start
  12. 20. chemical reaction releases more energy than it absorbs
Down
  1. 1. attraction between a slightly positive hydrogen atom and a slightly negative atom
  2. 3. polymers that are made up of monomers called nucleotides
  3. 6. molecules that contain C, H, O, N, and sometimes S (sulfur), make up proteins
  4. 8. a mixture of substances that is the same throughout
  5. 10. substances made by a chemical reaction
  6. 12. the specific reactants that an enzyme acts on
  7. 13. a polymer made of monomers called amino acids
  8. 15. attraction among molecules of different substances
  9. 16. are catalysts for chemical reactions in living things
  10. 17. has slight positive region and slight negative region