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a biological membrane that separates the interior of all cells from the outside environment.
structure surrounding plan tcells i tgives cells rigidity and strength.
structure in animal cells thought to form the spindle fibres during cell division.
structure that contains the two centrioles arranged at right angles to each other in animal...
the development of a distinct head, with a concentration of nervous tissue and sense receptors...
the clear colourless fluid that occurs in the spaces, such as the ventricles and central canal,...
chlorofluorocarbons (CFCs) are organic compounds that contain carbon, chlorine and fluorine.