Silk, wool, DNA, cellulose and proteins. Starch and cellulose
Natural polymers. Polymers are very common in nature; some of the most widespread naturally occurring substances are polymers. Starch and cellulose are examples. Green plants have the ability to take the simple sugar known as glucose and make very long chains containing many glucose units.  Examples of naturally occurring condensation polymers are cellulose, the polypeptide chains of proteins, and poly(β-hydroxybutyric acid), a polyester synthesized in large quantity by certain soil and water bacteria. Formulas for these will be displayed below by clicking on the diagram.  Most natural polymers are condensation polymers, and in their formation from monomers water is a by-product. Starch is a condensation polymer made up of hundreds of glucose monomers, which split out water molecules as they chemically combine. Usually natural polymers are composed by condensation polymerisation with the elimination of water molecule. Starch is another example of such type of polymer which is formed by the condensation polymerisation of a large number of glucose molecules. Best Answer: Naturally occurring polymers include rubber and amber. A polymer molecule has a high molecular mass and is comprised of many smaller, repeating subunits or monomers. Polymers may be found in nature, such as the DNA and proteins found in living cells, or created in laboratories or factories. Polymer molecules come in many shapes and sizes. POLYMERS. Polymers are substances whose molecules have high molar masses and are composed of a large number of repeating units. There are both naturally occurring and synthetic polymers. Among naturally occurring polymers are proteins, starches, cellulose, and latex. Synthetic polymers are produced commercially on a very large scale and have a wide range of properties and uses. The materials commonly called plastics are all synthetic polymers. Polymers are formed by chemical reactions in which a large number of molecules called monomers are joined sequentially, forming a chain. In many polymers, only one monomer is used. In others, two or three different monomers may be combined Natural vs Synthetic Polymers. There are two types of polymers: synthetic and natural. Synthetic polymers are derived from petroleum oil, and made by scientists and engineers. Examples of synthetic polymers include nylon, polyethylene, polyester, Teflon, and epoxy. Natural polymers occur in nature and can be extracted. They are often water-based. Examples of naturally occurring polymers are silk, wool, DNA, cellulose and proteins.  Naturally occurring polymers such as cotton, starch and rubber were familiar materials for years before synthetic polymers such as polyethene and perspex appeared on the market. Many commercially important polymers are synthesized by chemical modification of naturally occurring polymers. A polymer (/ˈpɒlɨmər/) (Greek poly- , many + -mer, parts) is a large molecule, or macromolecule, composed of many repeated subunits. Linked chains are also important in chemistry. These kinds of chains are called polymers. The word comes from the Greek, polu meaning 'many' and meros meaning 'share.' A polymer is a chain of repeated units, called monomers.  Polymers are widely found in nature. The human body contains many natural polymers, such as proteins and nucleic acids. Cellulose, another natural polymer, is the main structural component of plants. Most natural polymers are condensation polymers, and in their formation from monomers water is a by-product. It is also referred to as a polysaccharide, because it is a polymer of the monosaccharide glucose. Starch molecules include two types of glucose polymers, amylose and amylopectin, the latter being the major starch component in most plants, making up about three-fourths of the total starch in wheat flour.
http://www.scienceclarified.com/Ph-Py/Polymer.html http://www2.chemistry.msu.edu/faculty/reusch/VirtTxtJml/polymers.htm http://www.edurite.com/kbase/5-natural-polymers https://answers.yahoo.com/question/index?qid=20070523053854AAwm61B http://scifun.chem.wisc.edu/chemweek/polymers/polymers.html http://www.cmu.edu/gelfand/k12-teachers/polymers/natural-synthetic-polymers/index.html https://en.wikipedia.org/wiki/Polymer http://study.com/academy/lesson/natural-polymers-definition-types-examples.html http://www.chemistryexplained.com/Pl-Pr/Polymers-Natural.html
different types of naturally occurring polymers