Which of the Following is a Bundle of Nine Microtubule

Question

Which of the following is a bundle of nine microtubule pairs surrounding two singlet microtubules?
A) axoneme
B) dynein
C) Arp-actin
D) tropomyosin
E) None of the answers is correct.

Accepted Answer

The axoneme is the structural basis of cilia and flagella in eukaryotic cells, characterized by its "9+2" arrangement of microtubules (nine doublets surrounding two central singlets).