Biology Unit 3 Vocab

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Across
  1. 3. strong, supporting layer around the cell membrane in some cells
  2. 6. cell organelle that breaks down lipids, carbohydrates, and proteins into small molecules that can used by the rest of the cell
  3. 7. microscopic, hair-like projections on the surfaces of some cells and of certain organisms
  4. 8. cellular transport where substances move against a concentration gradient. (requires energy)
  5. 9. process by which particles tend to move from an area where they are more concentrated to an area where they are less concentrated
  6. 12. the process by which cells move materials from within the cell into the extracellular fluid.
  7. 13. groups of organs and tissues that work together
  8. 16. organism whose cells contain a nucleus
  9. 18. microscope that uses multiple lenses and light to enlarge the image of a sample
  10. 22. a process by which liquid droplets are ingested by living cells; it is one type of endocytosis
  11. 25. groups of cells that work together (same job)
  12. 26. thin, flexible barrier that surrounds all cells; regulates what enters and leaves the cell
  13. 28. process by which solids are ingested by living cells; it is another type of endocytosis
  14. 29. the process by which cells move materials out of the cell
  15. 30. when comparing two solutions, the solution with the greater concentration of solutes
  16. 31. property of biological membranes that allows some substances to pass across it while others cannot; also called semi permeable membrane
Down
  1. 1. fluid portion of the cell outside the nucleus
  2. 2. cells can develop in different ways to have different features to help them carry out a special task to help the organism function
  3. 4. a process through which bulk amounts of specific molecules can be imported into a cell after binding to cell surface receptors.
  4. 5. process of diffusion in which molecules pass across the membrane through cell membrane channels
  5. 10. group of tissues that work together
  6. 11. when the concentration of two solutions is the same
  7. 14. tiny sacs that transport material within or outside the cell.
  8. 15. cell organelle that stores materials such as water, salts, proteins, and carbohydrates
  9. 17. unicellular organism that lacks a nucleus
  10. 19. diffusion of water through a selectively permeable membrane
  11. 20. network of protein filaments in a eukaryotic cell that gives the cell its shape and internal organization and is involved in movement
  12. 21. a microscopic hair-like tail used by cells and microorganisms for movement (usually only 1 or 2)
  13. 23. pressure that must be applied to stop water from diffusing across a selectively permeable membrane
  14. 24. when comparing two solutions, the solution with the lesser concentration of solutes
  15. 26. 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
  16. 27. Microscope--a microscope with high magnification that uses electron beams in place of light