1. Tardigrade
  2. Question
  3. Biology
  4. Regarding eukaryotic flagella, how many of the following features are incorrect? A. Peripheral doublet B. Flagellin units C. Tubulin protein D. Dynein protein and active movement E. L, P, S and M rings F. 9 + 0 arrangement of microtubules in axoneme

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Q. Regarding eukaryotic flagella, how many of the following features are incorrect?
A. Peripheral doublet
B. Flagellin units
C. Tubulin protein
D. Dynein protein and active movement
E. L, P, S and M rings
F. 9 + 0 arrangement of microtubules in axoneme

NTA AbhyasNTA Abhyas 2020

Solution:

B, E and F are not associated with eukaryotic flagella. Prokaryotic flagella are made up of long filament, hook structure and basal body; filament is made of protein called flagellin. Basal body contains L, P, C, S and M rings. MS and C rings act as rotor that helps in locomotion by proton-driven force. However, in eukaryotic flagella active energy in form of ATP is used for locomotion. Hence, eukaryotic flagella lack flagellin and L, P, S and M rings.
In axoneme 9 + 2 arrangement of microtubules is present.