Texas Tech Nutrition Exit Practice Test

Starch is made up of which components?

Glucose and Fructose Galactose and Glucose Amylose and Amylopectin Maltose and Lactose

Correct Answer:

Amylose and Amylopectin

Explanation:

Starch is a plant storage carbohydrate built from glucose units arranged into two polysaccharides: amylose and amylopectin. Amylose is mainly a linear chain of glucose linked by alpha-1,4 bonds, while amylopectin is highly branched, with both alpha-1,4 and alpha-1,6 linkages at the branch points. Together they form the starch molecule, giving it its characteristic structure and digestibility. The other options list monosaccharides or disaccharides (glucose, fructose, galactose, maltose, lactose) rather than the polysaccharide components that make up starch.

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