Which structures move to opposite ends of the cell during prophase?

Which structures move to opposite ends of the cell during prophase?

• A. Chromosomes
• B. Centrioles
• C. Vesicles
• D. Ribosomes

Answer: (B)

During prophase, centrioles are the structures that move to opposite ends of the cell. Centrioles are cylindrical organelles involved in cell division, specifically in the formation of the spindle apparatus. As the cell prepares to divide, centrioles replicate, and the pairs migrate to opposite poles of the cell, which helps organize the microtubules that will later assist in separating chromosomes during mitosis. This migration ensures that when the spindle fibers form, they can attach to the chromosomes at their centromeres, facilitating their proper alignment and segregation during the later stages of mitosis. The role of centrioles is crucial in ensuring that each daughter cell receives the correct number of chromosomes. In contrast, chromosomes do not move to opposite ends during prophase; instead, they condense and become more visible as the cell prepares for division. Vesicles and ribosomes do not play a direct role in the movement to the cell's poles during prophase, as their functions are more related to protein synthesis and transport rather than cell division.

During prophase, centrioles are the structures that move to opposite ends of the cell. Centrioles are cylindrical organelles involved in cell division, specifically in the formation of the spindle apparatus. As the cell prepares to divide, centrioles replicate, and the pairs migrate to opposite poles of the cell, which helps organize the microtubules that will later assist in separating chromosomes during mitosis.

This migration ensures that when the spindle fibers form, they can attach to the chromosomes at their centromeres, facilitating their proper alignment and segregation during the later stages of mitosis. The role of centrioles is crucial in ensuring that each daughter cell receives the correct number of chromosomes.

In contrast, chromosomes do not move to opposite ends during prophase; instead, they condense and become more visible as the cell prepares for division. Vesicles and ribosomes do not play a direct role in the movement to the cell's poles during prophase, as their functions are more related to protein synthesis and transport rather than cell division.