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chpt 2

the characteristics of life

an organism is a living thing
metabolism is the sum of all the chemical reactions in an organism
continuity of life means that all organisms arise from other living organisms of the same type
life is defined as the possession of the following characteristics;organised,requiring nutrition and excretion,capable of response and reproducing
organisation means that living things are composed of cells,tissues,organs and organ systems
nutrition is the way in which organisms obtain and use their food
excretion is the removal of waste products of metabolism from the body
response is the way in which all living things react to changes in their environment
reproduction is the production of new individuals
sexual involves the union of sex cells
asexual does not involve the union of sex cells
Created by: rcorbett