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 (O2 and CO2)
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