Mitosis

MITOSIS

Cancer it is uncontrolled cell growth, cancer cells do not respond to the sigals that regulate growth to most cells. As a result, they divide uncontrollably and form masses of cells called tumors that can damage the surrounding tissues. Cancer cells may break loose from tumors and spread thoughout the body. Cancer a disorder in which some of the body's own cells lose the ability to control growth, in one such example.

Step by Step Process of the Cell Cycle:

1) **Interphase** - first step of the cell cycle; broken down into 3 stages: a) **G1-** cell grows b) **S-** DNA is replicated; sister chromatids are made c) **G2-** cell prepares for mitosis 2) **Mitosis -** part of eukaryotic cell division during which the cell nucleus divides a) **Prophase-** chromatin condenses forming chromosomes; centrioles separate; spindle fibers begin to form b) **Metaphase-** chromosomes line up in the middle of the cell; chromosomes connect to spindle fibers at the centromere c) **Anaphase-** sister chromatids separate when pulled apart by spindle fibers d) **Telophase-** chromosomes gather at opposite ends of the cell; chromosomes unwind becoming chromatin; 2 nuclear membranes form 3) **Cytokinesis -** division of the cytoplasm during cell divison in plants - the cell plate eventually forms the cell wall in animals - cleavage furrow



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