Chapter 4

Name: ______________________   Date: ____________

Use the clues to fill in the crossword.

Across

  1. 3. The power to do work or make things move (6)
  2. 9. A heavy odorless colorless gas formed during respiration and by the decomposition of organic (13)
  3. 12. Gas in the air that we need to breathe (6)
  4. 14. The stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle (8)
  5. 15. The process in which there is movement of a substance from an area of high concentration of (9)

Down

  1. 1. Clear liquid we drink that falls as rain (5)
  2. 2. Organic process consisting of the division of the cytoplasm of a cell following karyokinesis (11)
  3. 4. A monosaccharide sugar that has several forms (7)
  4. 5. The final stage of meiosis when the chromosomes move toward opposite ends of the nuclear spindle (9)
  5. 6. A process in which an agent causes an organic substance to break down into simpler substances (12)
  6. 7. The process whereby DNA makes a copy of itself before cell division (11)
  7. 8. Diffusion of molecules through a semipermeable membrane from a place of higher concentration to (7)
  8. 9. Plastid containing ___ and other pigments (11)
  9. 10. The first stage of meiosis (8)
  10. 11. The second stage of meiosis (9)
  11. 13. Cell division in which the nucleus divides into nuclei containing the same number of chromosomes (7)