A Level Biology Practice Exam

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What type of division occurs during mitosis?

Meiotic division
Binary division
Nuclear division
Cytokinesis

The correct answer is: Nuclear division

Mitosis is characterized by nuclear division, which refers specifically to the process where the nucleus of a cell divides to produce two identical nuclei, each containing the same number of chromosomes as the original nucleus. This process is essential for growth, tissue repair, and asexual reproduction in organisms. During mitosis, the cell undergoes several phases (prophase, metaphase, anaphase, and telophase) that facilitate the accurate segregation of duplicated chromosomes. This ensures that each daughter cell receives an exact copy of the genetic material. While other terms such as "cytokinesis" relate to the overall division of the cytoplasm and formation of two distinct daughter cells, they do not specifically refer to the nuclear division phase that is the hallmark of mitosis. Therefore, nuclear division is the most accurate and relevant description of what occurs during mitosis.