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Across 4. nucleus stores 6. found only in plant cells ; use the energy from sunlight to make energy rich food molecules in a process known as photosynthesis 7. packages proteins and materials for distribution to other parts of the cell 8. all living things are made of 12. controls the movement of materials into and out of the nucleus through tiny holes 13. is a network of protein filaments that helps the cell to maintain its shape 15. threadlike structures containing the genetic information that is passed from one generation of cells to the next 16. storage of liquids ; to create pressure in order to create there structure 17. which cell is bigger 18. a widely accepted explanation of the relationship between cells and living things 21. a tissue that acts like a covering 22. this is the process where takes place in the chloroplast 26. long , thin fibers that function in the movement and supports the cell 27. release energy from stored food molecules 28. gel-like substance that is constantly moving 29. organelles break down 30. all the chemical reactions that occour in the cell 31. specialized structures that perform important cellular activities ; like "little organs" 35. a change in an organism's environment that affects the activity of the organism 39. type of protist which contains chloroplasts and moves 40. an organism composed of only one cell 41. the molecule that all living things have; provides instructions for making proteins 43. is NOT coated with ribosome 44. forms when part of the cell membrane surrounds an object and pinches off 45. ribosomes synthesized 46. what does "pro" mean 47. organelles break down food to make 48. a type of tissue that is important for movement

Down 1. thin structure that surrounds a cell ; protects the inside of a cell 2. components of the cell membrane are assembled 3. produce proteins 5. requires energy to move into cells 9. which cell type has a nucleus and organelles 10. breakdown lipids , carbohydrates , and proteins from food into particles that can be used by the rest of the cell 11. surrounds the nucleus and keeps it separated from the cytoplasm 14. an organism composed of many cells. 15. a tissue that holds things together 19. do not have organized organelles 20. which cell is smaller 23. a special type of diffusion which refers only to the movement of water across the cell membrane , it requires energy 24. lysosome is filled with 25. the maintanence of a stable internal environment 26. are hollow tubes of protein about 25 nanometers in diameter that serve as tracks 32. is coated with ribosome 33. granular material visible within the nucleus 34. hair like structures extend from the cells surface 36. what does "eu" mean 37. inside the nucleus ; is responsible for assembly/production of proteins within the cell 38. found only in plants ; provides support and protection for the cell 42. control center of the cell ; DNA