Biology Vocab Unit 3

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Across
  1. 3. property of biological membranes that allows some substances to pass across it while others cannot; also called semi permeable membrane
  2. 7. a process by which liquid droplets are ingested by living cells; it is one type of endocytosis
  3. 9. unicellular organism that lacks a nucleus
  4. 16. network of protein filaments in a eukaryotic cell that gives the cell its shape and internal organization and is involved in movement
  5. 19. microscope that uses multiple lenses and light to enlarge the image of a sample
  6. 21. when comparing two solutions, the solution with the lesser concentration of solutes
  7. 22. diffusion of water through a selectively permeable membrane
  8. 23. fundamental concept of biology that states that all living things are composed of cells; that cells are the basic units of structure and function in living things; and that new cells are produced from existing cells
  9. 24. process by which particles tend to move from an area where they are more concentrated to an area where they are less concentrated
  10. 25. fluid portion of the cell outside the nucleus
  11. 27. in a molecule, uneven distribution of electrons (results in (+) and (-) poles) ex. water
  12. 28. process by which solids are ingested by living cells; it is another type of endocytosis
Down
  1. 1. cell organelle that breaks down lipids, carbohydrates, and proteins into small molecules that can used by the rest of the cell
  2. 2. when the concentration of two solutions is the same
  3. 4. organism whose cells contain a nucleus
  4. 5. the process by which cells move materials from within the cell into the extracellular fluid.
  5. 6. when comparing two solutions, the solution with the greater concentration of solutes
  6. 8. force of attraction between different kinds of molecules
  7. 10. cellular transport where substances move against a concentration gradient. (requires energy)
  8. 11. a microscope with high magnification that uses electron beams in place of light
  9. 12. cell organelle that stores materials such as water, salts, proteins, and carbohydrates
  10. 13. process of diffusion in which molecules pass across the membrane through cell membrane channels
  11. 14. the amount of heat needed to raise the temperature of 1 gram of a substance 1 degree Celsius (°C)
  12. 15. weak attraction between a hydrogen atom and another atom
  13. 17. thin, flexible barrier that surrounds all cells; regulates what enters and leaves the cell
  14. 18. tiny sacs that transport material within or outside the cell.
  15. 19. attraction between molecules of the same substance
  16. 20. the process by which cells move materials out of the cell
  17. 25. strong, supporting layer around the cell membrane in some cells
  18. 26. action tendency of water to rise in a thin tube