Class 8 Cordova Science Cahpter 8- Cell Structure and Function @classes6782
Why Are Cells Important? Building Blocks of Life Every living organism is made up of cells. Just like a building is made of bricks, a body is made of cells. Perform Life Functions All functions of life like breathing, digestion, growth, and reproduction happen because of cells. Specialized cells perform specific tasks (e.g., nerve cells help in sending messages). Growth and Development Organisms grow by increasing the number of cells through a process called cell division . New cells replace old and damaged cells. Forming Tissues and Organs Similar cells group together to form tissues . Tissues combine to form organs like the heart, brain, lungs, etc. Heredity and Reproduction Cells carry genetic material (DNA) that is passed from parents to offspring. Reproductive cells help in creating new individuals. Repair and Healing When you get a cut or wound, cells divide and help in healing the skin or tissue.