5.11 - Ribosomes, Cytoskeleton, Cilia and Flagella

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Across
  1. 3. The axoneme usually has ............ of radially arranged peripheral microtubules, and a pair of centrally located microtubules.
  2. 6. Cilia (sing.: cilium) and flagella (sing.: flagellum) are ........-like outgrowths of the ............
  3. 8. BThe peripheral doublets are also interconnected by ..........
  4. 9. Their core called the .........., possesses a number of microtubules running parallel to the long axis.
  5. 11. The prokaryotic bacteria also possess flagella but these are structurally ......... from that of the eukaryotic flagella.
  6. 12. There are ......... radial spokes.
  7. 13. The cytoskeleton in a cell are involved in many functions such as ..........support, motility, maintenance of the shape of the cell.
  8. 16. An elaborate network of filamentous proteinaceous structures consisting of microtubules, ........... and intermediate filaments present in the cytoplasm is collectively referred to as the cytoskeleton.
  9. 17. Both 70S and 80S ribosomes are composed of ....... subunits.
  10. 18. Ribosomes are the granular structures first observed under the electron microscope as dense particles by ............. (1953).
  11. 19. The eukaryotic ribosomes are 80S while the ........... ribosomes are 70S.
Down
  1. 1. Both the cilium and flagellum emerge from centriole-like structure called the ...............
  2. 2. Flagella are comparatively ..........and responsible for cell movement.
  3. 4. Each ribosome has two subunits, .......... and .........subunits.
  4. 5. The two subunits of 80S ribosomes are 60S and 40S while that of 70S ribosomes are 50S and 30S. Here ‘S’ (Svedberg’s Unit) stands for the ..............; it is indirectly a measure of density and size.
  5. 7. The central tubules are connected by bridges and is also enclosed by a central sheath, which is connected to one of the tubules of each peripheral doublets by a ..............
  6. 9. Such an arrangement of .............. is referred to as the 9+2 array.
  7. 10. Cilia are small structures which work like ..........., causing the ........... of either the cell or the surrounding fluid.
  8. 14. The electron microscopic study of a cilium or the flagellum show that they are covered with ................
  9. 15. They are composed of ............... (RNA) and proteins and are not surrounded by any membrane.