Unit 1 Crossword: Life Structure and Function

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Across
  1. 4. An organism made of many cells.
  2. 5. How an organism reacts to a stimulus.
  3. 9. The process plants use to make food using sunlight, water, and carbon dioxide.
  4. 10. Membrane A thin layer that surrounds the cell and controls what enters and leaves.
  5. 11. System A group of organs that work together to perform a major function in the body.
  6. 18. The job or purpose of a structure.
  7. 19. Wall A rigid outer layer that supports and protects plant cells.
  8. 20. The part of plant cells that uses sunlight to make food.
  9. 21. A jelly-like substance inside the cell where organelles are found.
  10. 24. The process cells use to release energy from food.
  11. 25. The movement of water across a membrane from high to low concentration.
  12. 26. The body system that supports and protects the body.
Down
  1. 1. The ability of an organism to maintain stable internal conditions.
  2. 2. The smallest unit of life that can carry out all life processes.
  3. 3. The system that allows you to breathe and exchange oxygen and carbon dioxide.
  4. 6. The part of the cell that controls its activities and contains DNA.
  5. 7. A structure made of different tissues that work together to do a job.
  6. 8. A group of similar cells that work together to perform a specific function.
  7. 10. The system that transports blood, oxygen, and nutrients through the body.
  8. 12. An organism made of only one cell.
  9. 13. The part of the cell that produces energy.
  10. 14. Something in the environment that causes a response.
  11. 15. The movement of particles from an area of high concentration to low concentration.
  12. 16. The system that allows the body to move.
  13. 17. A trait that helps an organism survive in its environment.
  14. 22. The way something is built or arranged.
  15. 23. A living thing made up of one or more cells.