Centriole is made up of _ triplets of microtubules.
Correct answer: A. 9
- A. 9
- B. 27
- C. 3
- D. 12
Explanation
The correct answer is 9 because each centriole is composed of nine triplet sets of microtubules arranged in a circular pattern, commonly referred to as the '9+0' configuration. Option B (27) incorrectly counts the total number of microtubules instead of the triplet sets. Option C (3) only mentions the number of microtubules in a single triplet, which does not reflect the overall structure of the centriole. Option D (12) is incorrect as it does not correspond with the known structure of centrioles, which are defined by having nine triplets.
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Animal, plant, prokaryotic and eukaryotic cells are compared through their membranes, cell walls, nuclei and cytoplasmic organelles. The work includes the structures and functions of mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus and lysosomes, as well as chromosome organization and the distinction between chromatin and chromosomes.
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