Q.112. The axoneme of eukaryotic flagellum
(1) Is made up of nine microtubule triplets
(2) Arises from the centriole like structure callad the basal bodies
(3) Possesses a number of microtubules running parallel to the short axis
(4) Made up of nine peripheral and two central microtubule doublets
Ans is (2)
A basal body is a protein structure found at the base of a eukaryotic undulipodium (cilium or flagellum). It is formed from a centriole and several additional protein structures, and is, essentially, a modified centriole. The basal body serves as a nucleation site for the growth of the axoneme microtubules. Centrioles, from which basal bodies are derived, act as anchoring sites for proteins that in turn anchor microtubules, and are known as the microtubule organizing center (MTOC).
A basal body is a protein structure found at the base of a eukaryotic undulipodium (cilium or flagellum). It is formed from a centriole and several additional protein structures, and is, essentially, a modified centriole. The basal body serves as a nucleation site for the growth of the axoneme microtubules. Centrioles, from which basal bodies are derived, act as anchoring sites for proteins that in turn anchor microtubules, and are known as the microtubule organizing center (MTOC).