alleryThe basic structural and functional unit of all living organisms is the:
ATissue
BMolecule
CAtom
DCell
Answer & Solution
Correct answer: D. Cell
All living organisms — single-celled (bacteria, amoeba) and multicellular (plants, animals) — are made of cells.
Cells perform all life functions (energy use, reproduction, response to environment).
**The cell theory says:**
(1) all living things are made of cells
(2) cells come from pre-existing cells
(3) the cell is the basic unit of structure and function.
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