Unique characteristic to convert from one form of energy and convert it to another. Effect on the structure of the organism. Prereqs for quant living system science. Measurement or calculation of living system behavior. Energy can be measured, therefore behaviours can be measured.
Metabolic behaviour is rearrangement of biochemical elements during a chemical reaction.
Need to have a metabolic and reproductive characteristics. Means has the capacity to direct energy. Provides the capability to direct energy. In an animal cell, has mitochondria and cytoplasm. DNA is essential.