CELL STRUCTURES AND FUNCTION
CELL DIVISION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It breaks down the nuclear membrane
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It replicates DNA
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It separates the chromosomes
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it divides the cell
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Detailed explanation-1: -Mitotic spindle, present at the poles of the cells, is a structure made of microtubules (spindle fibres). Its role is to separate the chromosomes. The spindle fibres attach to chromosomes during metaphase and pull the chromatids towards opposite poles during anaphase.
Detailed explanation-2: -The mitotic spindle is a highly dynamic molecular machine composed of tubulin, motors, and other molecules. It assembles around the chromosomes and distributes the duplicated genome to the daughter cells during mitosis.
Detailed explanation-3: -Spindle fibers from one side of the cell attach to one of the sister chromatids. The spindle fibers from the other side of the cell attach to the other sister chromatids of the chromosome. They attach at a point called the kinetochore, which is a disk or protein that is on each side of the centromere.
Detailed explanation-4: -The chromosomes are separated by a structure called the mitotic spindle. The mitotic spindle is made of many long proteins called microtubules, which are attached to a chromosome at one end and to the pole of a cell at the other end. The sister chromatids are separated simultaneously at their centromeres.
Detailed explanation-5: -The mitotic spindle is a conserved dynamic macromolecular structure composed of microtubules essential for the alignment and segregation of chromosomes during cell division [1].