Many eukaryotic cells possess flagella or cilia,which have the characteristic ______ arrangement of microtubules.
A)6 + 2
B)2 + 10
C)10 + 3
D)9 + 2

Question

Quizplus · Accepted Answer

The 9+2 arrangement of microtubules is the characteristic structure of eukaryotic flagella and cilia. The "9" refers to a ring of nine microtubule doublets surrounding a central pair of microtubules, which makes up the "2" in the arrangement. Therefore, the correct answer is D, 9 + 2.

Many Eukaryotic Cells Possess Flagella or Cilia,which Have the Characteristic