1. 1. Protein catalyst that speeds up the rate of specific biological reactions
  2. 3. Large muscular sac that continues the mechanical and chemical digestion of food
  3. 5. first step in digestion
  4. 7. Type of nutrient that is major source of energy for the body
  5. 10. response that blocks further actions of a stimulus
  6. 11. It connects the mouth to the stomach
  7. 12. It provides support for the body and connects its parts
  8. 15. Process by which enzymes break down food into small molecules that the body can use
  9. 17. movements of the body are possible because o it
  10. 20. Contractions of smooth muscles that provide the force that moves food through the esophagus toward the stomach
  11. 21. Bile is stored in it
  12. 23. Constant internalphysical and chemical conditions that organisms maintain
  13. 26. Type of tissue that lines the interior and exterior body surfces
  14. 28. Chemical substance that an organism needs to sustain life
  15. 29. Fingerlike projection in the small intestine
  16. 30. Basic unit of all forms of life
  1. 1. step in which the body eliminates what it does not need
  2. 2. fluis loaded with lipids and salts
  3. 3. nutrients are absorbed throughout its walls
  4. 4. Found in saliva, it breaks the chemical bonds in starches
  5. 6. Measure of heat energy in food
  6. 8. Enzyme that breaks down proteins into smaller polypeptide fragments
  7. 9. Physical breakdown of large pieces of food
  8. 13. organic molecules that the body needs in very small amounts
  9. 14. Group of similar cells that perform a particular function
  10. 16. group of organs that perform closely related functions
  11. 18. Type of tissue that transmit nerve impulses throughout the body
  12. 19. Made up of fatty acids and glycerol
  13. 22. converts food into small molecules
  14. 24. Group of tissues that work together to perform closely related functions
  15. 25. Inorganic nutrient the body needs
  16. 27. acids Compound with an amino group on one end and a carboxyl group on the other end