The Cell Cycle InterphaseMitosisCytokinesis How do cells produce more cells?

Cell Cycle Producing new cells allows you to grow and replace cells that have died Cell Theory: All cells come from existing cells The cell cycle is the life cycle of the cell The cell cycle begins when the cell is formed and ends when the cell divides to form two new cells

Making Prokaryotic Cells Prokaryotes are simple, so their cell division is simple Cell division in prokaryotes (bacteria) is called binary fission

Making Eukaryotic Cells Eukaryotes are more complex, so their cell division is more complex

Stages of the Cell Cycle InterphaseMitosisCytokinesis

Stage 1: Interphase Longest stage of the cell cycle Normal state of the cell – resting state Eventually… Cell grows Cell copies its organelles and organelles and chromosomes chromosomes

Stage 2: Mitosis – Prophase Nuclear membrane/envelop dissolves Chromosomes from inside nucleus condense Two centrioles move to opposite sides of the cell

Stage 2: Mitosis – Metaphase Chromosomes line up across the center of the cell

Stage 2: Mitosis – Anaphase Chromosomes split into chromatids Chromatids separate and are pulled to opposite sides of the cell to opposite sides of the cell

Stage 2: Mitosis – Telophase Nuclear membrane/envelope reforms around each of the two sets of chromosomes Nuclei separate and pull away from each other

Stage 3: Cytokinesis Cytoplasm splits into two cells that are identical to the original cell Each “daughter cells” contain the same number and quality of chromosomes