Many other naturally occurring amino acids exist, and the structures of a few of these are displayed below. Some, such as hydroxylysine and hydroxyproline, are simply functionalized derivatives of a previously described compound. These two amino acids are found only in collagen, a common structural protein. Homoserine and homocysteine are higher homologs of their namesakes. The amino group in beta-alanine has moved to the end of the three-carbon chain.
Following are examples of three metamorphic rocks and a list of their uses. Marble is a metamorphic rock that is used to make floor tiles, counter tops and it is carved into statues and was used extensively in the building of the Roman Colosseum and other historic buildings.orundum, another metamorphic mineral, â¦ is used for abrasives Kyanite and its polymorphs-for ceramics Graphite-pencils Many economic deposits of gold, copper, tungsten and iron occur in metamorphic rocks. Asbestos is a metamorphic mineral which was formerly used for insulation. 25 people found this useful.
Slate is another metamorphic rock that is used in buildings for floor and roofing tiles, and it was once used for blackboards. Quartzite is used as a source of silica; other forms of metamorphic rocks are useful as building components, monuments, counter tops, and facings.