Biology Definitions

Biology Definitions

Autotroph: Aliving organism that makes its own complex organic matter from simple inorganic substances.

Heterotroph: a living organism that obtains its nutrients by consuming complex organic matter it cannot make its own food. All animals and fungi are heterotrophs. Most bacteria are heterotrophs.

Excretion: is the removal of the waste products of metabolism from the living organism.

Sensitivity: the ability of an organism to detect changes in its external and interna...

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