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Cell Cycle Introduction Cell division and replication Warm-up Questions: • How are the products of photosynthesis used in cellular respiration? • What is the cells main form of energy? The Cell Cycle The cell cycle is the daily life and reproduction of the cell. Mitosis is the act of the cell duplicating its DNA and separating into two identical cells. Interphase O Cells spend most of their life in Interphase. O The cell obtains nutrients and performs normal cell activities. O The cell reads its DNA. Prophase O Nuclear envelope disappears during prophase. O Mitotic spindles form. O Chromosomes become more coiled and visible through light microscope. Metaphase O Chromosomes align along the center of the cell. O Chromosomes are in their most condensed stage. O Preparing for division. Anaphase O Chromosomes split and sister chromatids move to opposite poles. O Only accounts for about 1% of cells time. Telophase O Final phase. O Cell separates into two sister cells. O Cytokinesis is the physical process of the cell separating.