Any molecules that exist as strings of the same or similar subunits<span> are called polymers;</span>starch<span>, proteins, and nucleic acids are all polymers, as are many artificial materials, such as plastics. Its a relatively easy way to build big molecules.</span>
Starch is a huge polymer of glucose subunits and is the depository form of glucose in plants. Sources include seeds, grains, corn, beans, potatoes, and rice. There exist actually two kinds of starch: amylose and amylopectin. Amylose is a large, unbranched, chain of glucose subunits.
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