At the chemical level, the DNA of prokaryotic cells, which have no nuclear membranes, and that of eukaryotic cells, which have separate, membrane-enclosed nuclei, is identical. DNA is a long, double-stranded molecule containing a backbone of repeating, alternating sugar and phosphate units.
Simple cuboidal epithelium is a type of epithelial tissue found in the body. It is a single layer thick and made of cube-shaped cells. This type of tissue is found lining parts of the body such as the kidney tubules and walls of respiratory bronchioles.
1). simple epithelium that composed of a single layer of cells. squamous epithelium that composed of flattened platelike cells. stratified epithelium epithelium made up of cells arranged in layers.). simple epithelium that composed of a single layer of cells. squamous epithelium that composed of flattened platelike cells. stratified epithelium epithelium made up of cells arranged in layers.