What is a large molecule with many repeating units?

• Correct Answer: polymer
• plasma
• cells
• supermolecule

Explanation: Starches are complex carbohydrates. They are polymers of glucose. A polymer is a large molecule that consists of many smaller, repeating molecules, called monomers. The monomers are joined together by covalent bonds. Starches contain hundreds of glucose monomers. Plants make starches to store extra glucose. Consumers get starches by eating plants. Common sources of starches in the human diet are pictured in the Figure below . Our digestive system breaks down starches to sugar, which our cells use for energy.

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