Why are microtubules considered among the non-membranous organelles?
A) They do not have their own enclosed membrane.
B) They are associated with the plasma membrane.
C) They are aggregated into bundles.
D) They are composed primarily of the protein actin.
E) They are comprised chiefly of the protein tubulin.

Question

Quizplus · Accepted Answer

Microtubules do not have their own enclosed membrane, which is the defining characteristic of membranous organelles like the endoplasmic reticulum and Golgi apparatus.

Why Are Microtubules Considered Among the Non-Membranous Organelles