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.
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Central tubules − connected by bridges and enclosed within the central sheath
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Radial spoke − connects one of the tubules of each of the nine peripheral microtubules with the central sheath
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Linkers − interconnect the peripheral tubules
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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.
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Hub: Central part of the proximal region of the centriole
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Radial spokes: Connect the hub with the tubules of the peripheral triplets
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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.
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