Across
- 4. double-layered sheet that forms the core of nearly all cell membranes
- 8. process by which a cell releases large amounts of material
- 10. small particle in the cell on which proteins are assembled
- 14. separate roles for each type of cell in multicellular organisms
- 16. internal membrane system in cells in which components of the cell membrane are assembled & some proteins modified
- 19. organism whose cell contains nuclei
- 20. small, dense region within most nuclei in which the assembly of ribosomes begin
- 21. inside the cell membrane other than the nucleus
- 22. group of similar cells that perform a particular function
- 24. specialized structure that performs important cellular functions within a eukaryotic cell
- 28. energy-requiring process that moves material across a cell membrane against a concentration difference
- 32. group of organs that work together to perform a specific function
- 33. organelle found in cells of plants & some other organisms that uses energy from sunlight to make energy-rich food molecules by photosynthesis
- 34. threadlike structure within the nucleus containing the genetic information that is passed from 1 generation of cells to the next
- 36. large structure in cells that contains the cell’s DNA & controls the cell’s activities
- 37. group of tissues that work together to perform closely related functions
Down
- 1. process in which extensions of cytoplasm surround & engulf large particles & tale the, into the cell
- 2. strong layer around the cell membrane in plants, algae, & some bacteria
- 3. stack of membranes in the cell in which enzymes attach carbohydrates & lipids to proteins
- 5. long, thin fibers that functions in the movement & support of the cell
- 6. process by which a cell takes material into the cell by infolding the cell membrane
- 7. basic unit of all forms of life
- 9. property of biological membranes that allows only certain substances to pass through them
- 11. thin, flexible barrier around a cell
- 12. hollow tube of protein that maintains cell shape & can also serve as a “track” along which organelles are moved
- 13. process by which molecules tend to move from an area where they are more concentrated to an area where they are less concentrated
- 15. movement of specific molecules across cell membranes through protein channels
- 17. the mass of solute in a give volume in solution
- 18. cell organelle that stores materials such as water, salts, proteins, & carbohydrates
- 23. cell organelle that releases energy from stored food molecules
- 25. network of protein filaments within some cells that helps the cell maintain its shape and are involved in many forms of cell movement
- 26. idea that all living things are composed of cells
- 27. single-celled microorganism that lacks a nucleus
- 29. envelope double-membrane layer that surrounds the nucleus of a cell
- 30. cell organelle filled with enzymes need to break down certain materials in a cell
- 31. granular material visible within the nucleus
- 35. diffusion of water through a selectively permeable membrane