Ultimate G

Notes

Ultimate Guide to Cell Division & Cancer (Made Super Simple!) •Why Cells Divide (The Big Picture) Cells divide mainly for growth (from babies to adults, increasing cell numbers), repair (healing cuts and replacing damaged cells), and reproduction (single-celled organisms splitting to produce copies). •The Cell Cycle (Like a Life Loop) Think of a cell’s life as a four-step playlist: Step 1: Interphase (90% of the time) – Prep Mode • G1 Phase: Cell grows and performs functions (like a student in class) • S Phase: Copies all DNA (like saving a project) • G2 Phase: Checks everything and prepares for division (like packing a lunch for a trip) Step 2: Mitosis (Actual Division) – Split Mode • Prophase: DNA condenses into chromosomes (like scrunching a scarf into a ball) • Metaphase: Chromosomes line up in the middle (like students in a line) • Anaphase: Chromosomes are pulled apart (like a tug-of-war) • Telophase: Two new nuclei form (like building a wall between roommates) Step 3: Cytokinesis – Cut the Cake The cell splits into two identical daughter cells (like cutting a pizza in half). Definitions for the Cell Cycle: • Chromosome: Structure in the nucleu...