Question

Do Centrioles have a membrane?

Answer 1

Centrioles: A centriole is a cylinder-shaped organelle that is primarily made of the protein tubulin. The majority of eukaryotic cells have centrioles, although these organelles are absent in conifers (Pinophyta), flowering plants (angiosperms), most fungi, and only the male gametes of charophytes, bryophytes, seedless vascular plants, cycads, and ginkgo trees.

1. A centriole is composed of nine (9) sets of triplet microtubules.
2. Centriole consists of one complete microtubule joined by two incomplete microtubules.
3. Two nuclei are arranged in such a way that one is perpendicular to the other.
4. The nucleus is a small cylinder-like structure or a hollow cylinder.
5. Centrioles surround themselves with a 'cloud' of protein material, this dense material called the pericentriolar matrix (PCM), both of which form the all-important centrosomes.
6. They are cytoplasmic organelles without their own boundary membrane.

Final Answer: No, centrioles are not membrane-bound.