A single layer of tall, thin cells. These large cells contain organelles that enable them to perform complex functions. In the intestines, it produces and secretes mucus and digestive enzymes. These often have cilia and microvilli on the surface. nonciliated simple columnar epithelium single layer of nonciliated column-like cells with nuclei near base of cells; contains goblet cells and cells with microvilli in some locations; function in secretion and absorption
Definition of copper. 1  any of various small butterflies of the family Lycaenidae having copper colored wings. 2  a reddish brown the color of polished copper. 3  uncomplimentary terms for a policeman.  a copper penny.
Copper is a ductile metal, and pure copper is soft, malleable, nonmagnetic and non-sparking, whereas steel is magnetic, and some of its forms can be manipulated to make a variety of shapes and forms. Copper is a constituent of various metal alloys, and steel is itself an alloy.teel alloy is made up of two or more elements, and it contains iron and carbon, or other metals. The difference between steel and copper is bacterial corrosion. Copper is resistant to corrosion in underground environments, and steel can rust.