The monomer units of DNA are nucleotides. Each of these consist of  a 5-carbon sugar which is deoxyribose, a nitrogen containing base  attached to the sugar and a phosphate â¦ group. Judy Olmsted. 78,524 Contributions. Retired college science professor. DNA is a nucleic acid. Nucleic acids are polymers of nucleotides (also called mononucleotides).   The nucleotides in DNA are deoxyribonucleotides.   Each nucleotid â¦ e consists of a pentose (5-carbon) sugar, a nitrogen-containing base and a phosphate group.
The sclera (from the Greek skleros, meaning hard), also known as the white of the eye, is the opaque, fibrous, protective, outer layer of the eye containing collagen and elastic fiber.he sclera forms the posterior five-sixths of the connective tissue coat of the globe. It is continuous with the dura mater and the cornea, and maintains the shape of the globe, offering resistance to internal and external forces, and provides an attachment for the extraocular muscle insertions.
The Sclera is the posterior opaque white/off-white surface of the eye; this dense fibrous tissue envelops the entire posterior surface of the eye, excluding the continuous ant â¦ eriorly of the cornea, iris, and pupil which is at its center.he outside covering of the eye is a protective envelope of leathery connective tissue known as the sclera. This is the white coating on the outside of the eyeball, commonly k â¦ nown as the white of the eye. It completely envelops the globe except at the front of the eye and maintains the shape of the globe.