The addition of colchicine stocks a culture of actively dividing flagellated euk

Question

The addition of colchicine stocks a culture of actively dividing flagellated eukaryotic cells inhibits all of the following EXCEPT A. Movement of flagella B. Growth of flagella C. Formation of the microtubular cytoskeleton D. Formation of the mitotic apparatus E. Polymerization of tubilin
Why is answer A ? It’s over my head...
The addition of colchicine stocks a culture of actively dividing flagellated eukaryotic cells inhibits all of the following EXCEPT A. Movement of flagella B. Growth of flagella C. Formation of the microtubular cytoskeleton D. Formation of the mitotic apparatus E. Polymerization of tubilin
Why is answer A ? It’s over my head...
A. Movement of flagella B. Growth of flagella C. Formation of the microtubular cytoskeleton D. Formation of the mitotic apparatus E. Polymerization of tubilin
Why is answer A ? It’s over my head...

Explanation / Answer

Flagella, Microtubular cytoskeleton, mitotic apparatus, polymerization of tubulin all are made up of microtubules (tubulin).
colchicine inhibits microtubule polymerization by binding to tubulin.

Movement of flagella does not require any tubulin polymerization it only require H+ pump to rotate the flagella.
Thats why it not affect by colchicine treatment.

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