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the part of the cell that controls all the activities of the cell and plays an important role in cell division.
reactions in which large complex molecules are broken down to form smaller,simpler molecules;...
the domain that contains prokaryotic micro-organisms. Some live in extreme environments, such as...
a species that has been introduced into an area in which it did not previously or naturally...
a duct through which saliva passes from the salivary gland into the mouth.