More formally, collagen is the major insoluble protein in the extracellular matrix and in connective tissue, according to the MolecularCellBiology.com. Although collagen may be best known for its uses as a facial skin rejuvenator, it has important medical uses, primarily for burn victims.ollagen is the glue that holds the body together. Without collagen, we would literally fall apart. More than 80 percent of the skin is composed of collagen. It is also the main component of ligaments and tendons.
Eukaryotic cells contain membrane-bound organelles, such as the nucleus, while prokaryotic cells do not. Differences in cellular structure of prokaryotes and eukaryotes include the presence of mitochondria and chloroplasts, the cell wall, and the structure of chromosomal DNA.
Identify the major similarities and differences... 1. Identify the major similarities and differences between prokaryotic and eukaryotic cells. 2. Where is the DNA housed in a prokaryotic cell? Where is it housed in a eukaryotic cell? 3. Identify three structures which provide support and protection in a eukaryotic cell.