Moderate

Mitotic apparatus is formed during_of cell division.

Correct answer: B. Prophase

  • A. Interphase
  • B. Prophase
  • C. Metaphase
  • D. Anaphase
  • E. Telophase

Explanation

The mitotic apparatus, also known as the mitotic spindle, is formed during the **Prophase** stage of cell division. Here's an explanation of each of the stages you mentioned:1. **Interphase**: This is the stage before cell division where the cell prepares for division by growing, replicating its DNA, and carrying out normal cellular functions. The mitotic apparatus is not formed during interphase.2. **Prophase**: During prophase, the chromatin in the nucleus condenses into visible chromosomes, and the mitotic spindle, consisting of microtubules, begins to form. The spindle fibers extend from the centrosomes and play a crucial role in separating chromosomes during cell division.3. **Metaphase**: In metaphase, the mitotic spindle is fully formed and the chromosomes align at the cell's equator, known as the metaphase plate. The spindle fibers help hold the chromosomes in place during this alignment.4. **Anaphase**: In anaphase, the spindle fibers start to shorten, pulling the sister chromatids of each chromosome apart and moving them towards opposite poles of the cell. This is a key step in chromosome segregation.5. **Telophase**: In telophase, the separated chromatids reach the opposite poles of the cell, and new nuclear envelopes begin to form around them. The mitotic apparatus begins to disassemble as cell division nears completion.So, the formation of the mitotic apparatus primarily occurs during prophase.

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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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