• word of the day

    cell theory

    cell theory - Dictionary definition and meaning for word cell theory

    Definition
    (noun) (biology) the theory that cells form the fundamental structural and functional units of all living organisms; proposed in 1838 by Matthias Schleiden and by Theodor Schwann
    Synonyms : cell doctrine

Word used in video below:
text: a plant cell has a membrane and a cell wall.
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