Differentiate between the structure of flagella in bacteria and centriole
Differences between the structure of flagella in bacteria and centriole.
Structure of cilia
These are hair-like outgrowths of the plasma membrane.They are covered by the plasma membrane. Axoneme forms core of the internal portions of the cilia. Axoneme contains microtubule which are 9 pairs of peripheral microtubules and one pair of central microtubules. This arrangement is called 9 + 2 array.
Central tubules − connected by bridges and enclosed within the central sheath
Radial spoke − connects one of the tubules of each of the nine peripheral microtubules with the central sheath
Linkers − interconnect the peripheral tubules
Basal body − centriole-like structure from where the cilia and the flagella emerge
Structure of centriole
A centriole is made up of nine sets of peripheral fibrils of tubulin protein and no doublet in the center. . Also, each of the peripheral fibrils is a triplet.
Hub: Central part of the proximal region of the centriole
Radial spokes: Connect the hub with the tubules of the peripheral triplets
Importance of centriole: Forms the basal body of the cilia and the flagella, and the spindle fibre
Hope this information will clear your doubts about the cilia and centriole.