Tuesday 2/24/14 Please take out your lab book Pencil Warm up: Page 123 What does DNA do? Draw the structure of DNA What is a nucleotide?

Life of a Cell The cell cycle occurs in 3 stages: - interphase (longest Phase) - mitosis - cytokinesis

Interphase is the longest phase of the cell cycle Interphase is the longest phase of the cell cycle. The G1, S and G2 phase all occur during interphase. The process of Mitosis only takes up about 25% of the cells life.

Cell Division Classification Stage Name Process 1 Interphase Cell doubles in size; DNA replicates 2 Mitosis Cell division goes through 4 phases (PMAT) Mitosis begins; nuclear membrane disappears Prophase a. Chromosomes line up along the equator of the cell Metaphase b. Chromatids split and are pulled to each pole of cell Anaphase c. Nuclear membrane reforms; cell begins to pinch together Telophase d. Parent cell’s cytoplasm divides, forming 2 identical daughter cells 3 Cytokinesis