Across
- 1. the center of the atom which contains the protons and neutron; in cells, structure that contains the cell's genetic material (DNA) and controls the cell's activities
- 4. when the concentration of two solutions is the same
- 8. diffusion of water through a selectively permeable membrane
- 9. threadlike structure within the nucleus containing the genetic information that is passed from one generation of cells to the next
- 10. specialized structure that performs important cellular functions within a eukaryotic cell
- 15. cell organelle that converts the chemical energy stored in food into compounds that are more convenient for the cell to use
- 17. strong supporting layer around the cell membrane in plants, algae, and some bacteria
- 18. small, dense region within most nuclei in which the assembly of proteins begins
- 21. one of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope
- 22. internal membrane system in cells in which lipid components of the cell membrane are assembled and some proteins are modified
- 23. network of protein filaments within some cells that helps the cell maintain its shape and is involved in many forms of cell movement
- 24. organism whose cells contain nuclei
- 25. cell organelle that stores materials such as water, salts, proteins, and carbohydrates
- 28. stack of membranes in the cell that modifies, sorts, and packages proteins from the endoplasmic reticulum
- 29. material inside the cell membrane-not including the nucleus
- 30. process by which molecules tend to move from an area where they are more concentrated to an area where they are less concentrated
Down
- 2. cell organelle filled with enzymes needed to break down certain materials in the cell
- 3. small particle in the cell on which proteins are assembled; made of RNA and protein
- 5. when comparing two solutions, the solution with the lesser concentration of solutes
- 6. granular material visible within the nucleus; consists of DNA tightly coiled around proteins
- 7. single-celled organism lacking a nucleus
- 11. when the concentration of a solute is the same throughout the solution
- 12. organelle found in cells of plants and some other organisms that captures the energy from sunlight and converts it into chemical energy
- 13. thin, flexible barrier around a cell; regulates what enters and leaves the cell
- 14. the mass of solute in a given volume of solution, or mass/volume
- 16. layer of two membranes that surrounds the nucleus of an atom
- 19. double-layered sheet that forms the core of nearly all cell membranes
- 20. idea that all living things are composed of cells,cells are the basic units of structure and function in living things, and new cells are produced from existing cells
- 26. collection of living matter enclosed by a barrier that separates the cell from its surroundings; basic unit of all forms of life
- 27. when comparing two solutions, the solution with the greater concentration of solutes