Characteristics of Life

    Cards (3)

    • Characteristics of life
      • Living things are made up of cells
      • Living things reproduce
      • Living things are based on a universal genetic code (DNA)
      • Living things grow and develop
      • Living things obtain and use materials and energy
      • Living things respond to their environment
      • Living things maintain a stable internal environment (homeostasis)
      • Taken as a group, living things change over time
    • Biological organization (smallest to largest)
      1. Subatomic particle
      2. Atom
      3. Molecule
      4. Organelle
      5. Cell
      6. Tissue
      7. Organ
      8. Organ System
      9. Organism
    • Why are viruses not classified as living?
      • Don't grow
      • Don't need food to fuel metabolic activity
      • Cannot use genetic material by themselves
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