Why Are Microtubules Considered Among the Non-Membranous Organelles

question 114

Multiple Choice

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.

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