CELL STRUCTURES AND FUNCTION
CELL DIVISION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Microtubules build up from centrosomes
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The nucleus breaks down
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Centrosomes move to opposite poles
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Microtubules attach to chromosomes
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Chromosomes line up in the center of the cell
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Detailed explanation-1: -The mitotic spindle also begins to develop during prophase. As the cell’s two centrosomes move toward opposite poles, microtubules gradually assemble between them, forming the network that will later pull the duplicated chromosomes apart.
Detailed explanation-2: -During mitosis, microtubules similarly extend outward from duplicated centrosomes to form the mitotic spindle, which is responsible for the separation and distribution of chromosomes to daughter cells.
Detailed explanation-3: -The main events of prophase are: the condensation of chromosomes, the movement of the centrosomes, the formation of the mitotic spindle, and the beginning of nucleoli break down.
Detailed explanation-4: -S phase. In S phase, the cell synthesizes a complete copy of the DNA in its nucleus. It also duplicates a microtubule-organizing structure called the centrosome. The centrosomes help separate DNA during M phase.