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The eight metabolic reactions required in order for an organism to be "alive".

Respiration

The act of using oxygen and/or other gasses to break down nutrients in order to obtain energy.

Regulation

Adaptation to both internal and external stimuli.

Reproduction

The act of making another organism that is the same as the beginning. (Not required for survival of the individual, but required to keep the species alive.)

Growth

Increase in cell size and/or number.

Excretion

Getting rid of metabolic waste(s).

Transport

The act of moving one's bodily materials from one place to another.

Synthesis

The act of combining small substances to create a larger substance.

Nutrition

Obtaining nutrients in return for energy via respiration and/or synthesis.

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