Across
- 2. the structure that contains the cell's genetic material in the form of DNA
- 4. cell organelle that stores materials such as water, salts, proteins, and carbohydrates
- 6. diffusion, process of diffusion in which molecules pass across the membrane through cell membrane channels
- 7. apparatus, organelle in cells that modifies, sorts, and packages proteins and other materials for storage
- 9. when the comparing two solutions, the solution with the greater concentration of solution
- 11. membrane, thin, flexible barrier that surrounds all cells, regulates what enters and leaves the cell.
- 13. basic unit of all forms of life
- 15. diffusion of water through a selectively permeable membrane
- 18. converts the chemical energy stored in food into compounds that are more convenient for the cell to use
- 19. specialized structure that performs cellular functions within a eukaryotic cell
- 21. reticulum, internal membrane system found in eukaryotic cells
- 22. wall, strong, supporting layer around the cell membrane in some cells
- 23. when the concentration of two solutions is the same
- 25. when comparing two solutions, the solution with the lesser concentrations of solution
- 27. fluid portion of the cell outside the nucleus
- 28. pressure, pressure that must be applied to prevent osmotic movement across a selectively permeable membrane
- 30. water channel protein in a cell
- 31. cell organelle consisting of RNA and proteins found throughout the cytoplasm in a cell
- 32. theory, fundamental concept of biology that states that all living things are composed of cells.
Down
- 1. permeable, property of biological membranes that allows some substances to pass across it while others cannot
- 3. gives the cell its shape and internal organization and is involved in movement.
- 5. process by which particles tend to move from an area where they are more concentrated to an area where they are less concentrated
- 8. group of tissues that work together to perform closely related functions
- 10. , group of similar cells that perform a particular function
- 12. bilayer, flexible double-layered sheet that makes up the cell membrane and forms a barrier between the cell and its surroundings
- 14. cell organelle that breaks down lipids, carbohydrates, and proteins into small molecules
- 16. system, group of organs that work together to perform a specific function
- 17. relatively constant internal physical and chemical conditions that organisms maintain
- 20. captures the energy from sunlight and converts it into chemical energy
- 24. specific protein to whose shape fits that of a specific molecular messenger
- 26. unicellular organism that lacks a nucleus
- 29. organism whose cells contain a nucleus