BI 112 chapter 4

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Across
  1. 2. Basic unit of life.
  2. 5. Derived from the endoplasmic reticulum, lots of different types like food ____ or contractive _____.
  3. 9. A carbohydrate and a lipid attached by a glycosidic bond
  4. 12. Protein factories.
  5. 13. Located within the nucleus and is the site of rRNA synthesis
  6. 14. The fluid inside chloroplasts
  7. 16. Provides support and regulates important cellular events. (2 words)
  8. 22. Has bound ribosomes to its surface. It's the "membrane factory"
  9. 24. Cell lacking a nucleus
  10. 27. Maintenance of cell shape, anchorage of the nucleus and formation of the nuclear lamina. (made of several different types of proteins. (2 words)
  11. 29. Microtubules are made out of this type of protein
  12. 31. Regulates the entry and exit of molecules into and out of the nucleus (2 words)
  13. 32. Synthesis of lipids, detoxifies drugs and alcohol. Lacks ribosomes.
  14. 33. Selective barrier that allows passage of some substances (2 words)
Down
  1. 1. Bacteria uses this to move around and find food.
  2. 3. Powerhouse of the cell.
  3. 4. Contains most of the cells genes (the government of the cell)
  4. 6. Digestive compartments; membrane bound sacs; it digests and recycles cells and organelles.
  5. 7. DNA is divided into discrete units called _______ (23 pairs of these)
  6. 8. DNA and proteins of chromosomes together
  7. 10. A type of matrix animals have since we lack a cell wall. Helps with protection, communication etc.
  8. 11. This is the "nucleus" for prokaryotic cells.
  9. 15. Membranous sacs stacked to form a granum in chloroplasts
  10. 17. Maintenance of cell shape, changes in cell shape, muscle contracting, cytoplasmic streaming, cell motility and diffusion.
  11. 18. A carbohydrate attached to a protein.
  12. 19. Cell containing a nucleus
  13. 20. Package and shipping center. Receives proteins and then synthesizes and ships them off.(2 words)
  14. 21. Encloses the nucleus and separates it from the cytoplasm (2 words)
  15. 23. Structural support for cells and helps maintain cell shape and anchorage for organelles. It's always breaking and re assembling.
  16. 25. Hollow tubes: in charge of cell shape, cell mobility, chromosome movements, organelle movements, and they are like the highways and railroads of the cell.
  17. 26. Polysaccharide layer outside the cell that protects bacteria for example from getting eaten.
  18. 28. Little hairs on the outside of certain cells that help stick to other cells
  19. 30. Microfilaments are made out of this type of protein