a fully differentiated structural and functional unit in an animal that is specialized for some particular function

(biology) the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals

a hairlike projection from the surface of a cell; provides locomotion in free-swimming unicellular organisms

an organelle found in the cytoplasm of most cells (especially in leukocytes and liver and kidney cells)

a part of the cell containing DNA and RNA and responsible for growth and reproduction

a small round body of protein in a cell nucleus; such organelles contain RNA and are involved in protein synthesis

an organelle containing enzymes responsible for producing energy

(biology) the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals