Across
- 2. water in the cell helps keep the cell’s ___ stable
- 4. cells that perform a specific function are called ___ cells
- 5. the passing of water from an area of high concentration to a lower concentration
- 8. what von Leeuwenhoek called the tiny organisms he saw in pond water
- 11. a widely accepted explanation of the relationship between cells and living things
- 13. focusing on an object to get a sharp image is called good _____
- 14. electron microscopes use a ___ of electrons to magnify an image
- 16. organelle that receives things from the ER, it changes them and packages them
- 20. compounds found in fats and oil, used for making new cell membranes
- 22. endoplasmic reticulum that has ribosomes embedded in it is called ____ ER
- 23. a single cell has the same needs as an ____ organism
- 25. scientist that looked at cork and termed the use of the word “cell” for the structures he saw
- 28. an instrument that makes objects appear larger
- 29. cells are the basic units of structure and function in all ___ things
- 31. a lens that is thicker in the middle is called this type of lens
- 32. any substance that cannot be broken down into a simpler substance
- 35. our bodies are 70 percent ___
- 36. proteins that speed up chemical reactions are called this
- 37. the cell membrane is selectively ____, which means it lets some things in and not others
- 38. the nucleus is surrounded by a nuclear _____
- 40. found in seafood and vegetables, needed for the cells to make new DNA
- 42. the basic units of structure and function in all living things
- 44. the control center of the cell
- 46. organelle that converts food into energy
- 48. organelle that takes sunlight, carbon dioxide and water and makes food for the cell
- 49. the green pigment that can be found in some chloroplasts is called this
- 50. this type of electron microscope shows 3D images
- 51. the rigid layer that surrounds plant cells and some bacterial cells
- 52. living cells are produced from ___ living cells
- 54. strands of DNA in the nucleus
- 55. the cell membrane is also sometimes called the ___ membrane
- 56. inside the cell, helps the cell maintain its shape, looks like fibers and tubules
- 57. going from an area of high concentration to one of lower concentration
- 58. scientist that said “all cells come from other cells”
- 59. storage organelle for the cell, very large in plant cells
Down
- 1. elements bonded together make these
- 3. a network of membranes near the nucleus that takes the proteins the ribosomes makes and changes them to usable molecules
- 6. all ___ ___ are composed of cells
- 7. thick fluid through which the organelles move in a cell
- 9. scientist that said “all plants are made of cells”
- 10. process of removing large particles form the cell
- 12. this type of diffusion uses a protein channel to get big things through the cell membrane
- 15. organelle that breaks down materials for the cell
- 17. organs working together make __ ___
- 18. organelles that make proteins
- 19. this type of microscope uses light and lens to magnify specimens (3 words)
- 21. scientist that said “all animals are made of cells”
- 24. controls what enters and exits the cell
- 26. found in red meats and fish and nuts, needed by cells
- 27. all the small structures within the cell that each have their own function are called this
- 30. looked at pond water and saw living organisms
- 33. this type of electron microscope shows inside the cell
- 34. taking in large particles by the cell require this process to happen where the cell membrane will surround the particle and engulf it
- 39. transport through a cell that doesn’t require energy is called this type of transport
- 41. these organelles aid in cell division, there are 2 of them in a cell
- 42. found in breads and pastas, needed to make cells membranes
- 43. a group of cells working and doing the same function make a ____
- 45. what the cell wall is made of- makes it strong
- 47. found within the nucleus, makes ribosomes
- 53. transport that does require energy to move things in and out of the cell