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12 terms

Life Functions

STUDY
PLAY
Growth
Increase in size
Respiration
The process by which living things convert sugar into energy (ATP) in the presence of oxygen
Regulation
The sum of all activities that help maintain an organisms homeostasis
Homeostasis
The maintenance of a stable internal environment
Metabolism
All the chemical reactions occuring within the cells of an organism
Excretion
The removal of metabolic wastes
Nutrition
Taking materials from the external environment and changing them into usable forms
Reproduction
Production of new organisms of the same kind
Synthesis
Combining simple substances chemically to make more complex substances (allows for growth and repair)
Transport
Process by which substances enter and leave cells and become distributed in the organism
Biology
The study of life
Cell
The basic unit of life