Non-living to Living Things
Atoms >>> radiation >>> organic molecules >>> RNA >>> complex cells >>> bacteria >>> multi-cellular organisms >>> mutation >>> species ... What Makes Stem Cells “Living”? Stem cells meet all the criteria for life at the cellular level: Metabolism: They carry out chemical reactions to stay alive and function. Growth and Division: They can divide and produce more cells—sometimes indefinitely. Response to Stimuli: They react to signals from their environment, which can guide their development. Homeostasis: They maintain internal stability, just like other living cells. Core Ingredients of Stem Cells Component Function Cell Membrane Protects the cell and controls what enters and exits. Cytoplasm Gel-like fluid that holds all internal structures and allows chemical reactions. Nucleus Contains DNA—the genetic blueprint that guides cell behavior and potential. Mitochondria Produces energy (ATP) to po...