Living Organisms: Characteristics

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Stimulus

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A change in the environment.

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DNA

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One of the chemicals found in all living things that is genetic material.

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Sexual reproduction

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When organisms reproduce involving 2 parents.

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Unicellular

Back

An organism made of only 1 cell.

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Multicellular

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An organism made of many cells.

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Homeostasis

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The ability of an organism to keep conditions inside its body the same, even with changes in the environment.

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Autotroph

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An organism that produces its own food, typically through photosynthesis.

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Heterotroph

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An organism that cannot produce its own food and must consume other organisms.

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Growth

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The process of an organism increasing in size.

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Development

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The process of an organism becoming more complex over time.