The internal cytoskeletal structure of cilia and flagella grows out from a structure called a basal body located near the cell surface. Based on this information, where would you predict the plus end of the microtubules to be located?
A)near the basal body
B)near the tip of the cilia or flagella
C)at both ends of the cilia or flagella
D)It is not possible to predict from the information provided.

Question

Quizplus · Accepted Answer

The information about the cytoskeletal structure growing out from the basal body suggests that the microtubules are oriented with their minus ends near the basal body and their plus ends near the tip of the cilia or flagella. Therefore, the best choice is B, near the tip of the cilia or flagella.

The Internal Cytoskeletal Structure of Cilia and Flagella Grows Out