Asked by MICAH LAME
Two paragraphs totally 100 words on mitosis and cytokinesis, one paragraph on the animal cell, and one on the plant cell.
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Mitosis is the process by which a eukaryotic cell divides its nucleus and distributes identical sets of chromosomes to two daughter nuclei. It proceeds through prophase, prometaphase, metaphase, anaphase and telophase, during which the mitotic spindle organizes and separates sister chromatids to ensure genetic fidelity. It preserves genome stability overall.
Cytokinesis follows mitosis and partitions the cytoplasm, organelles and cell membrane to form two independent daughter cells. In animal cells a contractile ring of actin and myosin pinches the cell into two, while plant cells assemble a cell plate from vesicles that builds a new dividing wall between the daughters.
An animal cell lacks a rigid cell wall and often has an irregular shape, centrioles that organize the mitotic spindle, many small vacuoles and lysosomes for digestion, and a flexible plasma membrane; some types also bear cilia or flagella for movement.
Plant cells have a rigid cellulose cell wall that maintains shape, a large central vacuole for storage and turgor pressure, chloroplasts for photosynthesis, and plasmodesmata connecting neighboring cells. During division they form a cell plate from Golgi-derived vesicles instead of using a contractile ring.
Cytokinesis follows mitosis and partitions the cytoplasm, organelles and cell membrane to form two independent daughter cells. In animal cells a contractile ring of actin and myosin pinches the cell into two, while plant cells assemble a cell plate from vesicles that builds a new dividing wall between the daughters.
An animal cell lacks a rigid cell wall and often has an irregular shape, centrioles that organize the mitotic spindle, many small vacuoles and lysosomes for digestion, and a flexible plasma membrane; some types also bear cilia or flagella for movement.
Plant cells have a rigid cellulose cell wall that maintains shape, a large central vacuole for storage and turgor pressure, chloroplasts for photosynthesis, and plasmodesmata connecting neighboring cells. During division they form a cell plate from Golgi-derived vesicles instead of using a contractile ring.
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