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Chapter 2: The Characteristics of Life

Life Life is defined as the possession of the following characteristics: organisation, requiring nutrition and excretion, capable of reproducing and responding.
Metabolism The sum of the chemical reactions in a living thing.
Continuity of Life Living things arise from other living thing of the same type.
Organisation Living things are composed of cells, tissues, organs and organ systems.
Nutrition The way in which an organism obtains and uses its food.
Excretion The removal of the waste products of metabolism from the body.
Reproduction The formation of new individuals.
Sexual Reproduction The union of two sex cells (gametes).
Asexual Reproduction Does not require the union of two sex cells.
Response The way in which an organism reacts to changes in its enviroment.
Created by: Shauna Clinton