1. Living things are based on a universal genetic code. - Genetic info stored in DNA molecule - Every organism contains A,T,C, and G nucleotides 2. Living things grow and develop. - Patterns of growth unique to every organism - Development starts as single fertilized egg 3. Living things respond to their environment. - Detect a stimulus, a signal to which gives a response, and respond accordingly. - a stimulus elicits a response phototropism 4. Living things are made up of cells. - Cells are complex and highly organized - Smallest units of life - Many specialized for specific purpose 5. Living things reproduce. - Produce similar organisms - Reproduction is asexual or sexual 6. Living things maintain a stable environment. - Energy is used to maintain internal environment (homeostasis) - Necessary for survival stomata 7. Living things obtain and use material and energy. - Chemical reactions in organisms break down or build materials necessary for life (metabolism) 8. Living things evolve as a group. - Change occurs over long periods of time through adaptation (evolution) - Common ancestry