Mitosis and the Cell Cycle PDF

Mitosis and the Cell Cycle (1.2.2) The cell cycle is a series of steps that the cell has to undergo in order to divide. Mitosis is a step in this cycle- the stage when the cell divides. Stage 1 (Interphase): In this stage the cell gro...

Mitosis and the Cell Cycle (1.2.2) The cell cycle is a series of steps that the cell has to undergo in order to divide. Mitosis is a step in this cycle- the stage when the cell divides. Stage 1 (Interphase): In this stage the cell grows, organelles (such as ribosome and mitochondria) grow and increase in number, the synthesis of proteins occurs, DNA is replicated (forming the characteristic ‘X’ shape) and energy stores are increased Stage 2 (Mitosis): The chromosomes line up at the equator of the cell and cell fibres pull each chromosome of the ‘X’ to either side of the cell. Stage 3 (Cytokinesis): Two identical daughter cells form when the cytoplasm and cell membranes divide Cell division by mitosis in multicellular organisms is important in their growth and development, and when replacing damaged cells. Mitosis is also a vital part of asexual reproduction, as this type of reproduction only involves one organism, so to produce offspring it simply replicates its own cells. The nucleus contains your genetic information. Mitosis and the Cell Cycle (1.2.2) 1 Mitosis and the Cell Cycle (1.2.2) 2