One of the following is CORRECT regarding flagella:

Correct answer: C. Originates from basal bodies

  • A. Made up of microfilaments
  • B. Contains centriole
  • C. Originates from basal bodies
  • D. They are immotile

Explanation

Flagella originate from basal bodies, which are protein structures located at the base of these appendages. Basal bodies serve as microtubule-organizing centers, anchoring and initiating the assembly of the axoneme-the core structural component of flagella. Structurally similar to centrioles, basal bodies consist of nine peripheral microtubule triplets arranged in a cylindrical pattern. In cells destined to have a single primary cilium, the mother centriole differentiates into the basal body upon entry into the G1 phase or during quiescence. In multiciliated cells, basal bodies can be generated de novo from a specialized structure called the deuterosome. This transformation is crucial for the proper formation and function of flagella, facilitating cell motility and sensory functions.

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