Ch. 1 & 2

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Across
  1. 2. in meiosis, when chromosomes line up in pairs
  2. 5. the first person to discover the nucleus of a plant cell
  3. 9. when a cell's nucleus divides before splitting into two identical cells
  4. 10. a group of cells that perform the same function
  5. 12. the first phase of mitosis
  6. 15. when water particles move through a membrane
  7. 18. a group of tissues that work together for one job
  8. 19. An organism with only one cell
  9. 20. the part of the cell that stores genetic information
  10. 24. when chromosomes are copied
  11. 25. the last phase of mitosis
Down
  1. 1. the gel like substance that holds organelles in place
  2. 3. a microorganism that uses spores to reproduce
  3. 4. when the nucleus of a cell divides twice
  4. 6. a product of photosynthesis
  5. 7. a organism that is microscopic
  6. 8. this invention led to the discovery of cells
  7. 11. when things are balanced
  8. 13. the first person to observe a cell
  9. 14. the part of a leaf cell where photosynthesis takes place
  10. 16. all living things are made of these
  11. 17. the third step in mitosis
  12. 21. the first person to observe a unicellular organism
  13. 22. a sack like structure that holds water and food
  14. 23. a whiplike tail that helps some cells move around