Biology - Chap 7

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