Crossword Study Guide

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Across
  1. 2. A type of sugar used by cells for energy
  2. 5. Organ where most digestion and absorption happen
  3. 8. Wave-like muscle movement that pushes food through the digestive system
  4. 10. Jobs that an organ or system performs
  5. 11. What the scientist measures in an experiment
  6. 15. What the scientist keeps the same in an experiment
  7. 17. What the scientist changes in an experiment
  8. 18. Where digestion begins and food enters the body
Down
  1. 1. Substances in food that the body needs for energy and growth
  2. 3. Organ that absorbs water and forms waste
  3. 4. A protein that speeds up chemical reactions like digestion
  4. 6. Taking nutrients into the bloodstream
  5. 7. Tiny finger-like structures that increase surface area in the small intestine
  6. 9. Another word for glucose
  7. 12. Tube that carries food from the mouth to the stomach
  8. 13. Liquid in the mouth that helps break down food
  9. 14. Substance in the stomach that helps break food down
  10. 16. Organ that churns food and mixes it with acid