Which organelle separates chromosomes during cell division?

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Study for the 9th Grade Biology SOL Test. Prepare with flashcards and multiple choice questions, each featuring hints and explanations. Get ready for your exam!

Multiple Choice

Which organelle separates chromosomes during cell division?

Explanation:
Chromosome separation during cell division is driven by the mitotic spindle, organized by centrioles in many animal cells. Centrioles duplicate and move to opposite poles, helping assemble the microtubules that attach to kinetochores on chromosomes. As division proceeds, these microtubules shorten and pull the sister chromatids apart toward opposite ends of the cell, ensuring each new cell gets a complete set. Chromosomes themselves carry the genetic material and don’t organize their own separation; ribosomes make proteins and Golgi bodies process and ship them, but neither moves chromosomes. So centrioles are essential for setting up the spindle that separates chromosomes.

Chromosome separation during cell division is driven by the mitotic spindle, organized by centrioles in many animal cells. Centrioles duplicate and move to opposite poles, helping assemble the microtubules that attach to kinetochores on chromosomes. As division proceeds, these microtubules shorten and pull the sister chromatids apart toward opposite ends of the cell, ensuring each new cell gets a complete set. Chromosomes themselves carry the genetic material and don’t organize their own separation; ribosomes make proteins and Golgi bodies process and ship them, but neither moves chromosomes. So centrioles are essential for setting up the spindle that separates chromosomes.

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