Table of Contents
What has a 9 2 arrangement of microtubules?
Both flagella and cilia have a 9 + 2 arrangement of microtubules. This arrangement refers to the 9 fused pairs of microtubules on the outside of a cylinder, and the 2 unfused microtubules in the center.
Which structures are made up of 9 pairs of microtubules?
Protein Composition of Centrioles Centrioles are cylindrical structures typically composed of nine triplet microtubules (Fig. 34.15), but some are simpler: doublet microtubules in flies and single microtubules in nematodes. The older mother centriole in each pair has appendages lacking on the new daughter centriole.
Do Centrioles have a 9 2 arrangement?
-Eukaryotic flagella and cilia share a common structural organization of 9+2 arrangement. Here, nine doublet microtubules are arranged peripherally surrounding a central pair of singlet microtubules. But they differ in length, number per cell, and even the beating pattern. So, the correct answer is ‘Centrioles.
Do cilia have a 9 2 arrangement?
Cilia depend on their highly differentiated structure, a 9 + 2 arrangement, to remove particles from the lung and to transport reproductive cells.
What is the arrangement of axonemal microtubules?
Thus, the arrangement of microtubules in the axonemal of that of cilia and flagella is called a 9+2 array. The reason behind this is that axonemes have nine pairs or doublets arranged radially peripheral to microtubules and pairs of centrally located microtubules.
Which of the following contains 9 plus 2 arrangement of microtubules consisting of nine doublets of microtubules surrounding a pair of single microtubules?
The motile cilium is a complex organelle that is typically comprised of a 9+2 microtubule skeleton; nine doublet microtubules surrounding a pair of central singlet microtubules.
What is the microtubule arrangement of a flagellum or cilium quizlet?
Both flagella and cilia have a common structure and mechanisms of movement. Both are composed of microtubules wrapped in an extension of the plasma membrane. Contain a ring of nine microtubule doublets surrounding a central pair of microtubules. This arrangement is called 9 + 2 Pattern.