1. Essential Life Functions  Transport: how organisms get what they need to cells…how they move waste from cells to organs to excretion.  Excretion: how organisms get rid of waste and balance fluids (pH, water, salt, sugar)  Regulation: how organisms control body processes (using hormones, nervous system)

2. Essential Functions Continued  Respiration: Process of exchanging gases in the lungs (O 2 and CO 2 ) in cells: process that releases the chemical energy in stored food>cellular respiration  Nutrition: how organisms digest and absorb food  Synthesis: how organisms build necessary molecules

3. Essential Life Functions  Reproduction: producing offsprings (sperm, egg, seeds, spores) (sexual or asexual)  Growth and Development: increase in size….from egg to adult growth from seed, spore metamorphosis