Basic Biology Terms

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Cell

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The basic structural and functional unit in living organisms

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Organism

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A single, self-contained entity that performs all of the basic functions of life

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Unicellular

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An organism that is made up of one single cell

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Multicellular

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An organism that is made up of many cells that are often different types of cells

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Living or Non-living Rule

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The difference between living and non-living things is that all living things are made of cells

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Non-living organism

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An organism that was never composed of cells

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Prokaryote

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An organism consisting of just one cell that does not have a clear nucleus. Most are bacteria.

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Eukaryote

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An organism consisting of one or more cells with a nucleus. Most living things are eukaryote

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Organelle

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Specialized structures that carry out specific functions inside the cell. Ex: nucleus, vacuole and mitochondria

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DNA

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Genetic material that contains instructions for making new organisms and for carrying out all functions that keep a cell alive.