Biology

1. Protein catalyst that speeds up the rate of specific biological reactions
3. Large muscular sac that continues the mechanical and chemical digestion of food
5. first step in digestion
7. Type of nutrient that is major source of energy for the body
10. response that blocks further actions of a stimulus
11. It connects the mouth to the stomach
12. It provides support for the body and connects its parts
15. Process by which enzymes break down food into small molecules that the body can use
17. movements of the body are possible because o it
20. Contractions of smooth muscles that provide the force that moves food through the esophagus toward the stomach
21. Bile is stored in it
23. Constant internalphysical and chemical conditions that organisms maintain
26. Type of tissue that lines the interior and exterior body surfces
28. Chemical substance that an organism needs to sustain life
29. Fingerlike projection in the small intestine
30. Basic unit of all forms of life

1. step in which the body eliminates what it does not need
2. fluis loaded with lipids and salts
3. nutrients are absorbed throughout its walls
4. Found in saliva, it breaks the chemical bonds in starches
6. Measure of heat energy in food
8. Enzyme that breaks down proteins into smaller polypeptide fragments
9. Physical breakdown of large pieces of food
13. organic molecules that the body needs in very small amounts
14. Group of similar cells that perform a particular function
16. group of organs that perform closely related functions
18. Type of tissue that transmit nerve impulses throughout the body
19. Made up of fatty acids and glycerol
22. converts food into small molecules
24. Group of tissues that work together to perform closely related functions
25. Inorganic nutrient the body needs
27. acids Compound with an amino group on one end and a carboxyl group on the other end