What is the role of the spindle during mitosis?
Correct answer: A. It helps separate the chromosomes
- A. It helps separate the chromosomes
- B. It breaks down the nuclear membrane
- C. It duplicates the DNA
- D. It divides the cell in half
Explanation
The spindle apparatus plays a crucial role in mitosis by ensuring the proper segregation of chromosomes into the daughter cells. It consists of microtubules, which emanate from structures called centrosomes located at opposite poles of the cell. The spindle fibers attach to the centromeres of chromosomes and help to align them along the metaphase plate during metaphase. Additionally, during anaphase, the spindle fibers shorten, pulling sister chromatids apart and ensuring that each daughter cell receives an identical set of chromosomes. Overall, the spindle apparatus is essential for orchestrating the precise movement and distribution of chromosomes during cell division.
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About Cell Structure and Function
Animal, plant, prokaryotic and eukaryotic cells are compared through their membranes, cell walls, nuclei and cytoplasmic organelles. The work includes the structures and functions of mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus and lysosomes, as well as chromosome organization and the distinction between chromatin and chromosomes.
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