5.6 - EUKARYOTIC CELLS AND Cell Membrane

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Across
  1. 2. In addition to phospholipids membrane also contains ..............
  2. 6. The ..........of protein and lipid varies considerably in different cell types.
  3. 8. Eukaryotic cells possess an ......... nucleus with a nuclear envelope.
  4. 10. Plant and animal cells are different as the former possess cell walls, ........ and a large central vacuole which are absent in animal cells.
  5. 11. All eukaryotic cells are ......... identical.
  6. 16. The major lipids are ........... that are arranged in a bilayer.
  7. 17. The detailed structure of the membrane was studied only after the advent of the ............. in the 1950s.
  8. 18. In eukaryotic cells genetic material is organised into .............
  9. 19. In eukaryotic cells there is an .......... compartmentalization of cytoplasm through the presence of membrane bound organelles.
Down
  1. 1. Later, biochemical investigation clearly revealed that the cell membranes also possess ..........and ..............
  2. 3. Also, the lipids are arranged within the membrane with the ........... towards the outer sides and the hydrophobic tails towards the inner part.
  3. 4. Peripheral proteins lie on the surface of membrane while the integral proteins are partially or totally .......... in the membrane.
  4. 5. Depending on the ease of extraction, membrane proteins can be classified as ........and ...........
  5. 7. In human beings, the membrane of the ............has approximately 52 per cent protein and 40 per cent lipids.
  6. 9. These studies showed that the cell membrane is mainly composed of ........... and ............
  7. 12. The eukaryotes include all the protists, plants, animals and ........
  8. 13. On the other hand, animal cells have ........... which are absent in almost all plant cells.
  9. 14. In addition, eukaryotic cells have a variety of complex locomotory and ........... structures.
  10. 15. This ensures that the nonpolar tail of saturated hydrocarbons is protected from the .......... environment.
  11. 16. Meanwhile, chemical studies on the cell membrane, especially in human red blood cells (RBCs), enabled the scientists to deduce the possible structure of ..............