cells

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Across
  1. 4. the outside layer of the cell lets things in and out
  2. 9. when molecules are distributed evenly through a space _________ has been reached
  3. 10. moves out waste products
  4. 11. provides the cell with protein
  5. 12. ________ is when a particle is too large to exit the cell s the material fuses with the cell membrane and is released
  6. 14. cell membranes are ______ _____ which means they will let some materials into the cell while keeping others out
  7. 15. directs all the activities that happen in the cell
  8. 18. gives the cell energy and food molecules
  9. 19. chromosomes- holds the DNA tells the cell information
  10. 20. ______ respiration occurs when oxygen levels are low
  11. 25. producers make their own food by changing energy from the sun into a sugar form carbon dioxide (CO2) the cell process is called _____________
  12. 26. organisms that cannot make their own food like humans are called ________
Down
  1. 1. _________ ________ is when a cell uses no energy to move particles in and out of the cell
  2. 2. controls what happens in the nucleus
  3. 3. the total of all chemical activities of an organism that enable it to stay alive grow and reproduce is called _____________
  4. 5. supplies the cell with a lot of water
  5. 6. lets things in and out of the nucleus
  6. 7. organisms that make their own food like plants are called ________
  7. 8. when molecules move from areas of high concentration to areas of low concentration this process is called ___________
  8. 9. moves materials from the nucleus to the cell membrane
  9. 13. when producers or consumers break down food in their cells to release usable energy this process is called __________
  10. 16. contains chlorophyll which helps the plant make its own food
  11. 17. supplies the cell with water
  12. 20. ________ respiration occurs when oxygen is present
  13. 21. ________ is when a particle is too large to enter through active or passive transport so the cell “engulfs” the material
  14. 22. a gel-like substance that moves things around the cell
  15. 23. transport _________ _________ is when materials need energy to help them move through a cell membrane
  16. 24. the diffusion of water through a cell membrane is called ________